Very Strange Glitch

So, I was playing through Halo 5 solo Legendary the other day, got about halfway through the last level, and decided to quit because I was getting frustrated with a particular section. I started the game up today from the last checkpoint, and everything was fine, until a few minutes in. Then, my shield recharge indicator noise kind of broke or something. Listen to what I recorded:

https://account.xbox.com/en-us/gameclip/42a042b8-4b6f-4f4a-9d08-81e29bc455b9?gamerTag=JLtheStoneWall&scid=1370999b-fca2-4c53-8ec5-73493bcb67e5

What is this? Has this glitch happened to anyone else? I tried saving, quitting and then going back in from the last checkpoint, but that didn’t fix it. It’s really annoying, but I’m not going to restart the level over it.

It hasn’t, and very likely/hopefully won’t occur in multiplayer.

It’s just an audio glitch.

It’ll go once the mission’s over. Gave me an headache though, just hearing this faint, almost mute background sound of “beep beep beep beep”…

Haven’t seen it yet.