I admit that I haven't been super motivated to find out how/where.
Which streaming service will give me LIVE coverage?
Or is there coverage that NBC will absolutely not show live?
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USA, CNBC, NBCSN, Olympics channel all have live coverage, so any streaming service that includes those will give you lots to watch. I think you can see all of them in the NBC Sports App if you have that. You can also try Peacock. They've been mentioned in the commercials that I'm fast-forwarding through.
There is no live action between ~7 AM and ~5 PM PDT because people in Japan are asleep then.