"I've just been watching a rugby match," is Gatland's deadpan reply.
"How did you get on?" enquires Logan.
"Yeah, we were lucky enough, we won," comes the humble reply.
"Where did you think you won it - the last two minutes?"
"Yeah, we hung in there, we hung in there. It's Twickenham; we're normally used to winning here," Gatland says, while grinning from ear to ear.
"And what are you hanging around here for?" asks Logan.
"We're heading back to Wales," he explains.
"Good lad, really proud of you. What a legend!"
And with that Gatland was off into the night, presumably to continue the team's celebrations, before they turn their attention to their third Pool A match against Fiji at Millennium Stadium in Cardiff on October 1.
Meanwhile, Wales took the long way home to Cardiff after their stunning win over England at Twickenham, turning the bus ride home into a karaoke session.
The victorious Welsh squad, headed by Kiwi coach Warren Gatland, opted to make the 200 kilometre journey from London back to the Vale Hotel in Hensol during the early hours of Sunday morning, arriving around 3am. Gatland has now given his players a couple of days off as the squad recharge their batteries - and try to mend their broken bodies - before building towards another huge World Cup confrontation against Fiji in Cardiff on Friday NZ time.
"The players were restrained [on the bus] with Fiji coming up, but the management were quite lively, I've got to say," assistant coach Shaun Edwards added. "Particularly Paul Stridgeon [Wales' head of physical performance], who was at the front of the bus singing away and trying to do his own karaoke piece. It was a memorable trip home.
"A lot of the players live close by, and it's a big advantage for us for them to go home for a night or two to be with their families and come back refreshed."
And reflecting on the Twickemham triumph, Wales wing George North said: "The M4 is never a nice place, but when you win like that, coming home is something special. How many times in your career will you be able to say you beat the [World Cup] host nation in their back garden?
"It's brilliant for us. As soon as we got on the bus we enjoyed the trip back, but all the boys started to focus on the task in hand, the short turnaround and making sure everyone is fit and well for Fiji."