Do you consider Stax pieces a win condition?

I've been having this discussion with my playgroup and we're a bit divided, and wanted to gather the sentiment of the general community, so we've asked people around our shop and also in other pods we sometimes play with.

Do you consider Stax Pieces as win conditions? I'm not talking about things like [Stasis] [Winter Orb] that are meant to drag out the game, but more so establishing board states that are *functionally* uncrackable. This discussion was raised because I said to my playgroup "If I establish [Lavinia, Azorius Renegade] + [Knowledge Pool], I've reasonably won the game, with the only outs being high-priced staples and niche interaction. If you choose not to scoop, that's fine, but the game has functionally ended, I can easily close it out from here."

Felt this could be a neat discussion and maybe my mind could be changed with some cards or plays I'm not thinking of.

The primary two Stax Combos I am thinking of are:

[Lavinia, Azorius Renegade] + [Knowledge Pool]

[Narset, Parter of Veils] + [Teferi's Puzzle Box]