Sorry the second video have been block for copyright.
Machine have 838hrs Drum, 209hrs Capstan.
I would say that the capacity of recovery is linear with time, the longer it is stopped, the longer it take to come back.
Few seconds stop is not a problem, I have the time to change tape without problem.
I have a capacitance meter but I learned "the hard way"
that to have correct reading, you have to unsolder at least one of the capacitor leg, I don't know if I really want to do that
I think this machine have over 100 capacitors