"I think I'll form my own concerns without relying on you, if it's all the same."

Not that he doubts Tony knows Bruce better - he spends more time with him after all - but something in him bristles at the implication that he needs some kind of permission to worry about a friend. The dismissive shrug is mirrored in a light lifting of Arthur's shoulder, and he walks away, leaving the other to finish packing his things away.

"See you, Stark."