i may have just understood link click on a level i thought was impossible (i had a small epiphany that was probably obvious to everyone but me)
So. for context; sth that confused me for a while, is that the CXS deaths always happen in S1 fits, which are Gone after LG gets stabbed - so I thought that LG must have already succeeded delaying CXS' death, but then his reaction to Emma in 1x11 wouldn't make any sense (i.e. if he's already succeeded at delaying CXS' death by over a month why would he assume that Emma is "saved" in a matter of seconds?)
Additionally, the paper cutout style in 2x1 really seemed to hint a sort of "overwriting"? Which I thought meant it was originally CXS dying while LG was facing off against someone (that being vein, with yingdu knowledge).
BUT. "it seems that everything is changing" (2x1) !!! I've been looking at that line wrong.
SO new theory - he didn't delay it and he didn't mean that THIS exact moment was when CXS died and THAT is changing, but EVERYTHING is changing from now on.
so this whole plot is new to LG. the stab never happened in the timeline where vein kills CXS. that's why they still have their s1 fits (didn't have to discard them because of the blood) in CXS death scenes, and that's potentially why LG reacts to things in the ways he does starting 1x11. (tho those could just as well be trauma responses. He's very hard to read)
If that is really the case, this implies that 1x11 is potentially the first big divergence we've (and perhaps even LG has) seen (Yx1 with "everything happens the exact same").
I think this implies that when whatever they meddled with in Yingdu doesn't happen, that somehow leads Liu Xiao to kickstart the whole LTX and LTC (twins) thread.
+ anyway here's the 3 dates I grabbed for this thinkening:
22/10/2021 = 1x11, 2x1 - LG gets stabbed
13/09/---- = 2x12, Yx1 - CXS death + dives back
12/04/---- = Yx1, date LG returned to
next rewatch I'm making an excel sheet.