Why doesn't YouTube Watch Hours match?

Question

YouTube

Good day, friends.
I have a Youtube channel. I am gradually developing it. I can not understand the discrepancies in the figures for hours of viewing.
If I go to the analytics in the creative studio, I see 719 hours of viewing there. But if you go to the Monetization section, where they tell me about certain indicators for its inclusion, they write 104 hours. On hover it says updated 2 days ago. But I did not gain 600 hours of views in 2 days, 2 days ago there were about 700 hours in total. For some reason, they write 6 times less there. Why is that? who faced?

I don’t have plots, they also talk about short videos. What do they mean by a short video?
I have videos on the channel from 6 minutes and above.