Moved into a new place with high efficiency toilets and only had our old plunger. Spent multiple hours trying to clear it. I had no idea that these HE toilets are:
1.) More prone to clogs, need pipe maintenance
2.) Elongated and don’t work well with a normal plunger
Nearly called a plumber but on a final try picked up a BeeHive plunger at the hardware store.
Took a few attempts, but got it situated correctly and fixed the clog.