Sorry I couldn't play the game on stream! The mechanic was very innovative and it was great work for a first jam! I do think that it was a little frustrating that there wasn't a kill zone at the bottom of the stage (you fall forever until the time runs out lol). The timeline mechanic was really unique and I could imagine a more fleshed out version being the core of a full game.
I would also tune the balance a bit. I felt like the early levels were a bit too easy and the later ones ended up requiring really precise jumping that I didn't expect.
Overall great job!