it seems like you didnt read that one so I am explaining it in a simpler way
It bounces the same heat fs round or sabot round from its left turret cheek where it cant go through the side armor.
And idk if you learned your milimeters or centimeters but kv1 side armor is halft the length of your phone and expand outwards rather than being straight. So there is physically no way in either situations that round can follow the side armor for 1.8 meters which is longer than the side armor plate anyway.
Also I dont think it is smart to compare a near head on shot to a shot intentionally aimed at the corner of the turret just because either are non lethal.