Bleedout Timer
Need to actually test (ideally alongside other people), but currently, with
- Vasca Kavat with
Transfusion but not any bleedout increase ( Medi-Pet Kit and/or Loyal Companion) 
Oberon's Renewal and Undying Will- inside of the Simulacrum
causes the timer to completely disappear on both parties, merely changing the text to 'BLEEDING OUT'.
Without Renewal active, it still shows the timer on both (of 34s which... also shouldn't be happening, without a bleedout-link?!).
Perhaps most interestingly, if you have Renewal active on the pet in the above scenario while they're bleeding out and then cancel it, it starts the timer at 34s, which (barring it matching % of 34s to % of whatever it was before, thus rounding and displaying 34s anyway, even if it was less than the max of Undying Will) seems to indicate that the effects may stack together, completely preventing bleedout? I don't know to what degree this emerges as a result of me going into Bleedout solo since the Kavat has a revive ability, but I suspect it is a factor.
- If I go down as well, my timer begins counting down (likewise from 34s) once Renewal ends.
Will look at figuring out a bit more, alongside trying with the Bleedout Link mods.
Edit:
- Without Transfusion, activating Renewal seems to pause the Kavat's timer, not modifying the value further, even after Renewal is deactivated.
- Since both of us bleeding out causes a death and respawn now that I don't have a pet-revive (at least that's working properly, lol), this test and further are done only with the pet going down.
- Functions likewise on an Adarza with the same setup (no cat bleedout, no Transfusion [obviously, lmao]).
- 2:15 bleedout time on an Adarza with both bleedout mods, but not Undying Will.
- Activating a 76.5% Bleedout-Reduction Renewal kicks the timer to over 9 mins, which seems functioning as intended?
- 3:53 bleedout time on an Adarza with all bleedout mods.
- Activating a 76.5% Bleedout-Reduction Renewal 'stops' the timer, just as before.
Conclusion: I wonder if it just stops showing values above 10:00, for whatever reason (despite their being enough digits)?
Would be kind of hard to test exhaustively (especially to see whether or not it's actually still counting down), unless someone feels like AFKing with recordings...
Mind you, this is all in Simulacrum still; I'll look at maybe seeing what happens in Co-op, if my clanmates are patient enough to test it lol.
If true, then I guess theoretically, as long as you can keep killing people while downed (which mind you, will tend to wander away unless you have teammates up) -perhaps with Provoked- and collect Energy orbs or otherwise outpace the drain of Renewal, you can be immortal... on the floor? Hardly worthwhile imo, especially since the best use-case (Arbitrations) ignore Bleedout entirely.
Additional semi-related note, Phoenix Renewal going off-cooldown doesn't seem to proc and immediately revive, but this makes sense; I'd expect it to be a if-downed effect, rather than while-downed.