@Philweasel
Oh yeah, one way or another, that alliance just
wouldn’t last. It was glaringly obvious in the stark contrast found in Chrysalis’ suggestion in response to Cozy Glow suggesting to try killing the Windigos (and then her hissing at Tirek after he went “hey, it’s a shitty idea to give a potential threat like those
things leeway in that way, let them grow strong from disharmony”), among other things that she’s too different from them for it to realistically last, if not because of their clashing egos, because their mindsets have striking contrasts, with Chrysalis being the most prone to Bond Villain Stupidity/the Villain Ball.
(She’s notably worse than Sombra in that regard, because she’s had that kind of thing happen ever since her debut; she had it happen in S6 when she decided Starlight was too unimportant to bother replacing, she had it happen when she decided to tell Cozy Glow
not to chase Discord down, which allowed Discord to warn the heroes, she had it happen when she told Cozy Glow to wait until the heroes were broken first before killing them, to “have fun with our guests” first, acting like Tirek was a worrywart for being worried about Twilight being free, and the aforementioned Windigos. Maybe Sombra would’ve learned from his experiences in S9 if he’d appeared again, but I’d say he isn’t quite as
notorious of an offender as she is. He only made about two real mistakes out of arrogance in S9: leaving the Mane Six trapped in antimagic crystals, alone, and not blasting them from behind during Discord’s speech [though it does kinda tie into his MO of breaking their spirits, which does weaken them, the way magic works, though sadism is also a deciding factor], and he was playing pretty damn well for kind of being the underdog in the S3 premiere, with how uphill the path to victory was)
Chrysalis kinda did spell it out in the first half of the two-parter, that it wouldn’t, didn’t she?
Queen Chrysalis: Our pact stands. What we do, we do together. Once we defeat the protectors of Equestria, we can claim this land and rule our kingdoms alone once more.
Tirek and Cozy Glow, they’d have noticeably higher chances of sticking together, or at least keep in regular contact with one another (because hey,
decent chess players don’t grow on trees …) and it would be unsurprising if it went some way like you said, with the outcome of “mentor kills protégé,” or “protégé kills mentor” (
such is the way of the Sith), though if Chrysalis managed to run off with the bell in her possession as to have a leg up on them, in case, it could be an incentive for them to not actually get around to killing each other.
(That reminds me, probably, it would be either Cozy Glow or Chrysalis in possession of the bell. Tirek can get by just
fine without it, and both of them know it)