The timeline node is a very great tool to animate objects etc.
I use external curves to easily change the duration of several timelines at once.
This works great BUT if the timeline length does not match the length of the external curves the timeline node cancels too early or too late ( causing a jump in some cases, when played again too early ).
There should be an option to automatically clamp the timeline length to the extends of the longest curve length / last keyframe. That would be genious!