Tony nearly remarked about the power of a snap, but stopped himself before he revealed too much about where his head was actually at. He merely gave an ambiguous shrug and focused on a spot on the wall just over Natasha's shoulder.
"They're an odd pair, aren't they," he commented, sidestepping Natasha's suggestion of collaboration. "Siblings, do you think? Kissing cousins?" Tony was considered an eccentric by some, and even he thought the Doctors were weird.