In the Netflix TV series "Russian Doll", two people - Nadia and Alan are trapped in a time loop similar to one in the "Groundhog Day", except each loop ends with their death.
In the last episode
Alan and Nadia are in the different timelines: Nadia is one when Alan was never trapped and vice versa and they figure out, that they have to prevent the first death that occurred to the other one.
In the last scene of the movie we can see that the screen is split in two: on one side there is "original" Alan and "changed" Nadia, in the other - "changed" Alan and "original" Nadia. In both cases they walk towards some sort of parade and... the both parts of the screen merge together.
Does that supposed to mean that the timelines have merged as well or just that they've stumbled on the same event in the both versions?