After stealing two bottles of wine from Dr. Leekie's lecture, Cosima and Delphine rest in a courtyard before parting ways in episode 1x06 "Variations Under Domestication".
Source: Orphan Black — Wikia
Liam Cole almost hits a student while biking to the Darius Tanz lecture in pilot episode. Liam asks Diego if anyone has seen Dr. Croft in episode 1x02 "Another Trip Around the Sun".
From episode 2x10 "Naka-Choko".
Source: Hannibal Aesthetic — Tumblr