How long after snorting Ketamine can I start drinking alcohol?

Ketamine and alcohol is a pretty dangerous combo when taken together. How many hours after snorting a line or 2 of ketamine, paired with a joint, will i be able to drink safely without worrying too much about dangerous effects? I’m talking about all in the same night here. Last weekend i did both simultaneously (wasnt aware of how dangerous it was) and i was fine, didnt even vomit. I just dont want to test my luck again. Cheers all 🫶