first place an options trigger and disable player input
then use an arrow trigger to set the channel to an unused one (the direction can still be normal, channel just need to change
have a touch triggered teleport trigger teleport you back a few spaces
on the new channel, have a spawn ordered spawn trigger
place a spawn triggered move trigger with no group. set the duration to however long your cutscene is
at the end of the duration line (you might have to enable it in settings) put a spawn triggered teleport trigger to send you to wherever the gameplay picks back up. also put another arrow trigger to set the channel back to the original one
and finally re enable inputs