The main compounds in passionflower are not harmala alkaloids and they cannot be easily extracted and isolated like alkaloids can. The tech you saw for extracting passionflower doesn't actually work. That tech is posted on a few other forums as well. The tech is unscientific and can't work. Just to be sure, SWIM tried it for himself. It absolutely did not work. Nothing precipitated out at all.
Many people have tried the standard harmala alkaloid Manske tech on passionflower and that also doesn't work, indicating that passionflower has almost no harmala alkaloids in it.
Passionflower usually contains about 0.01% harmala alkaloids, and some passionflower has been found that contains no harmala alkaloids at all. However, smoking passionflower does extend a DMT experience. I don't think this is caused by MAOI activity though.
The main actives in passionflower are now thought to be flavonoids (up to 2.5% of the herb) like shaftoside, lucenin, apigenin, etc. With harmala alkaloids being so low in concentration, it's highly unlikely than the effects of passionflower have anything to do with them. I don't believe any of the flavonoids in passionflower are MAOIs.
I use passionflower a lot. It's one of those herbs I always have sitting around the house. It goes well with many other herbs, and can potentiate and alter the effects of other herbs and drugs despite it having almost no MAOI activity at all.
I wouldn't bother using passionflower as an MAOI for oral DMT. With harmala alkaloids ranging from nothing to 0.03%, you would need to consume 600 grams or more of passionflower for the harmala alkaloids to be effective! That's a lot.
You may remember me as 69Ron. I was suspended years ago for selling bunk products under false pretenses. I try to sneak back from time to time under different names, but unfortunately, the moderators of the DMT-Nexus are infinitely smarter than I am.
If you see me at the waterpark, please say hello. I'll be the delusional 50 something in the American flag Speedo, oiling up his monster guns while responding to imaginary requests for selfies from invisible teenage girls.