It's just been brought to my attention that Thomas Muller is now the highest-scoring German in the history of the Champions League. He has 27, overhauling Mario Gomez and his tally of 26.

Maicon runs the ball out of play as Porto venture forward. Perhaps the most impressive thing though is Mario Gotze tracking back deep into his own half. He scored the winner in the World Cup final, his team are 5-0 up and yet he still helps out his full-back.

As Porto finally get a turn of playing with the ball, Pep Guardiola starts urging his players to press. There's no sharing when Pep's involved.

Image source, AP

Bayern aren't going to ease up on Porto. They continue to hog the ball, poke and prod their belittled opponents and look a threat every time they pour forward.

Image source, PA

Millwall's hopes of survival in the Championship would receive a massive boost if they could score in the second half of their game at Blackburn. It's currently goalless at Ewood Park - and if it stays like that, the Lions would be three points adrift of safety with two matches remaining.

Promotion from League One is still in Preston's hands after they took a 2-0 half-time at relegation-threatened Notts County. They started the night in second place and a point ahead of MK Dons, who are only drawing 0-0 with Doncaster at the break.

Fourth-placed Bury and fifth-placed Southend have not been able to find a goal in the first half of their League Two clash at a packed JD Stadium - where all the fans have been allowed in for free.

Porto make a half-time change - hauling off Ricardo Quaresma and replacing him with Ruben Neves. We're back under way... and within 25 seconds Mario Gotze drags an angled shot just wide of the far post.

Josh Pain: I'm sending my kids to bed now. The Bayern game is too graphic for them to watch

James Mitchell: This is like Germany v Brazil 7-1 in the world cup. Porto defence are AWOL. Will Bayern Munich back off in the 2nd half?

OJ Riley: Against top opposition, it takes 90 minutes of hard graft to claim a lead... and not even half of that to throw it all away.

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It's the third time Bayern have scored five in the first half of a Champions League game. They did it against Roma earlier in the season, you may recall. When they come out swinging, their opponent look like a dazed heavyweight.

When the average touch position of your goalkeeper is on the edge of the box, you know you're on top.

Image source, Opta

BBC Sport's Simon Stone: "Goalless first-half at the Tameside Stadium - FC United v Stourbridge.

"A draw would almost certainly promote FC United as they would have to lose by 10 goals at Workington on Saturday to end up in the play-offs.

"But with a pretty loud and vocal crowd in attendance, they would prefer to get the job done tonight.

"Craig Lindfield came closest for the hosts with a header that flicked off the bar after 11 minutes.

"Meanwhile, approximately 30 miles away and one league lower, Darlington are drawing at Warrington.

"If that stays the same, Salford City, the team part-owned by the 'Class of 92' - Ryan Giggs, Gary Neville, Paul Scholes, Phil Neville and Nicky Butt - will be promoted."

Daryl Cherry: It's not surprising... Look what they did to Roma, Shakhtar Donetsk and Hamburg this Season... Great team!

Wes Chambers: Props to Bayern but imagine if it was Atletico who had the lead Bayern would be out.

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What will the Porto dressing room be like now. Silent? Lots of shouting? Those half-time oranges will taste more bitter than a pub tonic.

Harry Waldie: Looks like Porto have heeded the words of my former form tutor, Mr Taylor - "If you're going to lose, lose really really badly"

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BBC Radio 5 live's Pat Nevin at Allianz Arena

"It's an almighty chasm. Most professional footballers have gone through something like this. Nobody is playing well. The belief, the system, everything has fallen apart."

The half ends with a Porto player trying to control the ball and putting it out for a goal-kick with a heavy touch. In the space of 45 minutes, Bayern have steamrollered their opponents. They say 2-0 is an edgy half-time scoreline - nobody's ever said that about 6-3.

Bayern fans remain in their seats until the half-time whistle. Go for a comfort break, drink or pie and you might miss a goal.

Image source, EPA

It's now five minutes since Bayern last scored a goal. Pep out!

Kritt Normsaskul: Did Bayern lose the 1st leg on purpose just so they can make it a little fairer?

Hari Sri: Bow down to Pep Guardiola.

Ben: Bayern. Like racing your little nephew... give them a decent head start before turning on the style and laughing in their face.

Ross Burns: anyone who didn't see this mauling coming has clearly never watched bayern after a defeat. They don't sulk in Germany

Faraz: No fight from Porto all over the place since the kickoff look like conceding more goals.

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Bayern hold the record for the largest margin of victory in a Champions League knockout match having beaten both Basel and Shakhtar Donetsk 7-0 in previous campaigns. Porto would take 7-0 at the moment.

All the Football League goals so far have come in League One with second-placed Preston taking a step nearer to automatic promotion after taking a 2-0 lead at relegation-threatened Notts County - their second coming from the division's player of the year Joe Garner.

Promotion rivals MK Dons are being held by Doncaster while Swindon, already in the play-offs, are losing to Walsall and Scunthorpe are beating Bradford.

The Championship game between Blackburn and Millwall and League Two promotion clash between Bury and Southend are both still goalless.