Oliver's eyes darted away from Severus' as he watched the spilled liquid vanish from his clothes, his eyes quickly returned to their prior point of attention. Thanks, chap, he thought to himself, he wasn't going to give Snape the pleasure of his gratitude for cleaning his clothes.
"I never assume I'm safe, but I'm willing to bet my favorite broom there isn't a person in this room you couldn't sneak up on," this time he gave Severus a curt nod of respect.
"Yes, well, if you call our limited interactions as meeting the requirements of 'collaboration' then perhaps I should look up the meaning of the word again," Wood removed his eyes from the locked position with Snape's to take a bite of the food that was on his plate. "And, of course I made detailed notes."