regarding my last post

ok i just did the math i was at 70 pity when i got the first DHIL lc, so unless hsrs changed something the soft pity starts at 75, both for char and lc, i won the 25/75, then my pity went down to 0, then at 4 pity I got the second DHIL lc, then won the 25/75 again, can someone give me the chances of how rare that is pls?

oh btw should i do S2 or save the extra lc for a diff destruction char