RE:What do the big miners communicate?Interesting! That's why their hash rate to Bitcoin production ratio doesn't match up to each other. Basically chalked it up as MARA and RIOT constantly installing new miners on a daily basis and thus hash rate constantly changing.
Could be that MARA and RIOT are having cooling issues and thus can't operate at maximum capacity - RIOT recently announced that they're going to be using immersion cooling on a large scale.
Definitely more strong reasoning that indicates BITF is very undervalued.
All the best