I couln't find a good solution/setup.
We are still using some pre-rendered backgrounds with intro and loop parts.
Please let me know how to start the scene with intro background, continue with the loop (same clip or different) using B2B and transition logic too.
Usually if the playback mode is on looping with "free running", the scene start and loop fine, but the clip is restarted at every B2B action.
With "Autostart" the clip will loop without restarting at every B2B action but you will lose the start point, the animation is not frame accrue when you will use transition out and transition in from one scene to another.