Glitched MCC Playtime Stats (Halo Waypoint)

Games Halo: The Master Chief Collection
1

In game, the MCC playtime stats are relatively accurate (roughly a fortnight worth of playing), but on Waypoint it states that I’ve been playing for several weeks.
This has to be some kind of glitch as I certainly have not been playing for that long.

Do any other users have this problem with Playtime Stats on their Service Records?

2

On mine on MCC it says I have played 596 hours on Halo 4… I assure you it’s not true haha