Unfortunately, Sentinel still doesn't like being touched. Even more so after his canon update, which he is trying to figure out how to describe to Optimus without sounding like he's finally lost his marbles.

Pulling his arm away from Optimus' hand and he makes a thoughtful noise.

"There are some things I would like to discuss along the way."

You know, to wherever the hell they're going. Sentinel puts a hand over where Optimus flipped the panel shut. Ugh. Peasant germs.