1/ You can have as many timelines as you want ; in PD, you’ll receive as the first parameter after “/cursor” the ID of this cursor. So you can route the messages with the object route followed by the ID of the cursors you want to use. [udpreceive 57120] —> [route /cursor] —> [route 2 4 6 8]
2/ there’s not theoretical limit, but the ressources of the computer will limit. Network, graphical, CPU, it’s not simple to tell you a limit because you can have 1000 timeline-lines, but only 100 complex curves timeline… You must experiment!