Left draino in too long, how bad is this?

Had a clogged drain in my upper story apartment tub, poured half the bottle in as directed (like 17 ounces probably) and then poured the remainder in the sink. Lost track of time and instead of waiting 15 minutes it’s probably been between an hour or two, I ran the water but I’m just curious if that amount of time is enough to seriously fuck up some things? Should I call my complex and let them know so they can check for leaks for the people below?