gavra_at_work >>Rav Zeira refused to go back, so even then its not a good idea. <<
Rav Zeira refused to go back BECAUSE HE KNEW THAT RABA WOULD BE DRINKING AGAIN!! Even after shecting Rav Zeira, Raba was still going to drink.
(Please don’t read more into my words than I have said. Just discussing a gemarra here)