Generally if it's really over the limit pulling and pushing on the flywheel hard you will hear and feel a heavy clunk.
And you will easily see the crank and flywheel move forward and backward.
A proper end play of approximately .005" would not show any movement or sounding clunk to say a novice mechanic. A dial indicator is the accurate way to see the exact crankshaft end play clearance.
Also end play would have to be way way out of spec to cause a serious engine issues, difficult to achieve proper clutch adjustment, crank pulley moving, timing chain rubbing timing cover with clutch pushed in of course while running.
Just something that probably should be checked.