There’s a lot there. So I’ll speak to part of it.
Again, 10,000 ft remains helpful here ✈️:

“You also say, on the one hand, that time is finite, and on the other hand, you seem to say it is unlimited, without border, timeless, immortal. I can’t reconcile this.”

Time is finite. But if you can put it into a perfect vacuum it lasts forever ♾️. That’s the idea.
There’s no creating more time or energy, there’s only the potential preservation of what is.
A small amount of “time” (near) perfectly preserved for a very long time (read: infinitely ♾️) is “something like immortality.”

^I chose those exact words carefully in my original message, and I stand by them.

We aren’t arguing semantics. Those are two very different distinctions.

🤝