Cheat, glitch or neither? #haloinfinite

Hereya very short 4.3 second clip replayed 3x so that you can better judge for yourself. A multiplayer match in Halo infinite. Is this Cheating a glitch or neither? I don't know what the neither could be, because it's not a ricochet and I was behind the pillar so it couldn't be a shot to the head before I went behind the pillar. Thank you Please like and subscribe I really appreciate it.