There was one moment in the first half where he gathers the ball in midfield and starts carrying it. There's Mane on the left alone which seemed the right option to take. Bobby goes on on his own and earns a foul. Sadio gesticulated to him he should have passed as there was space ahead of him and Bobby just winked at him.
I mean I would probably react that way too but Sadio lad, one reason you and Mo have scored so many and had space available in front of you is because Bobby have fed you a shitload of passes and said space.
PS: In the name of perfection and Bobby's high standards of awareness, the pass he missed to Trent (instead he took the shot outside the box - right after the 2-0) that would have released the latter in basically an excellent position to score or even square the ball to someone else for a tap in, was the only mistake he did IIRC in an otherwise great performance. That backheel one two to Salah was just beautiful.