Did you get the alprazolam from a pharmacy? If not your pills might have been fake. Or you just didn't realize how fucked up you were?
Either way abusing benzos, especially with extremely high doses is a bad idea
I'd be willing to put money on he was incredibly intoxicated, maybe even completely wrecked, but just couldn't subjectively perceive it. Happened personally more times than I could ever count....for some reason, I've almost never been able to subjectively perceive benzo intoxication.....just my personal reaction to them I guess. Some subclasses and specific substances more than others though....
I very strongly echo your sentiment that this guy really should stop doing this kind of ridiculous, beyond irresponsible shit in such incredibly reckless dosages. He's already seeing just how differently he can react one experience from another for no controllable reason. He took same dosage of same drug and roughly the same tolerance- which I seriously doubt is 30 fucking milligrams. He's clearly not very experienced, in fact I'd say naive to the specific substance, I very seriously doubt tolerance is his problem, he doesn't need a tolerance break, he needs a reality break. I'm sure he'd get perfectly intoxicated off a tenth of that dosage (like an average person), but like myself and many others, for some reason, his brain just is incapable of subjectively perceiving his benzo intoxication. Of course, it become a tiny bit more apparent with gargantuan dosages, but at that point, you're getting slammed with the negative effects for only a glimpse of the positive ones. And I guarantee you, OP, this will not get any better as time goes on- no matter how hard you try or how many times you do. Similar shit that happened to me will happen to you and only increase in frequency the more you try. I don't even try using them for recreational purposes anymore. Sometimes you just gotta admit the reality of your own unique personal nature and what substances sync/work with it and which don't. And you have to stop shooting yourself in the foot to try to hit a paper target under a metal plate under your foot. Or a simpler way of explaining- I realized I was chasing a high that my personal bio/neurochemistry simply doesn't allow, but you bet your ass it allowed the negative side effects. I guess I just chose to grow up really.
OP, I'm sure you'll ignore my advice because you think you know better, but I have at least a decades worth of scripts and additional countless loads of diverted scripts of experience here (on top of the pharmacological knowledge/ed in addition to that), so I actually do usually kinda know a little what I'm talking about and do have pretty decent advice and words to share....I'm not saying you should necessarily give up all recreational endeavors with this substance as I have yet, sounds like you've still got a fair bit of experimenting with this shit left in you, but all I ask you, in fact, I implore you, PLEASE, REDUCE YOUR DOSAGES to ones that have AT LEAST the tiniest resemblance of responsibility and HR....Based off what I know, and what you've explained, I'm pretty damn certain you reached incredible intoxication and simply couldn't subjectively perceive or realize it.....it's actually a very coming phenomenon with benzos actually, and more likely to happen in certain people- I'm betting you're in that group. If you don't, I absolutely guarantee you- I'd in fact bet large sums of money- that soon enough, that 30 mg dose is going to cause havoc.....maybe ruined relationships, injuries, accidents, deaths, crimes, you never fucking know. Could even be something that has never and never will be in your nature/character. I shocked myself with some of the retarded shit I did and some accidents/injures I had......and I was incredibly lucky nothing worse happened. And I know I was.