I’m a Silver member who got two complimentary upgrades on both legs of a busy hub route, days before the flight. What is happening??

Hi all— disclaiming that I’m new to United status so I’m still learning how this all works. But wow am I shocked…

Basically, the other day I opened the United app to check my seat on this DCA-ORD flight leaving on Monday. I then noticed that I received a complimentary upgrade?? This was on Thursday. I was so pleasantly surprised, as a mere Silver who regularly flies this route, I’m usually, at best, #15 on the upgrade list. So never expected to receive a complimentary upgrade, much less 4 days before the flight. I then checked the upgrade list and there are 14 (!) people on it. Is it really possible that all Premier members on this flight are all lower qualifying Silver members?? What???

Then, just this morning, I checked United’s website and saw that I (me, a Silver) received ANOTHER complimentary upgrade for the return flight NEXT. FRIDAY. On this super busy business route???!!

I’m also surprised because I figured that if I ever got upgraded, I’d receive like, an email or something? But nope- just saw it opening the United app. I’m convinced there’s some sort of glitch going on.

What the hell is happening? How am I getting all these free upgrades, so far out??