On our old system, there was a button on the controller where one could switch back and forth between the current show and the previous show he or she was watching. So far, have not found that feature on the X1 controller. Is there anything that does that on the X1?
Sorry to say, that feature is not available with X1.
adding... you can start recording both shows and then use the last button to toggle between your two play points (will resume where you left).