IKJ: I've never been able to stretch it out that long. But I've had a few journeys where I had this strong sense that as long as I could hold onto the understanding, the trip would continue. I think I've managed to add maybe 5-7 minutes into my experience that way, but holding onto that understanding is an extreme mental workout which gets harder as the DMT fades.
All I can say about your 90 minute God experience: you must have had a really solid, beautiful sense of understanding that was sufficient to keep you there long after the molecule was done doing its work. Sounds incredible. I know you say it defies description, but please try!
Eliyahu: the reason I enjoyed your comments do much is that they are infused with all the passion and enthusiasm you'd normally hear from religious zealot... But without any of the burdens that come with the man made religions. I tend to look at these things from a more rational perspective, but I totally relate to everything you say. It's nice to see that level of passion accompanied by a sensible worldview. Articulating God is hard to do!