How do Saints Know About Our Prayers?

@AllieBethStuckey
Catholic vs. Protestant: Praying to Mary | Guest: Trent Horn | Ep 997
What do Catholics believe about Mary and the Saints?
https://www.youtube.com/shorts/w6Be6qoG9sg

Two observations:
1) It is a Catholic teaching that the way the saints know about prayers they have discretion on forwarding is, by God revealing it to them, since that is a thing pertaining to their glory;
2) I have a suspicion that "millions of prayers at once" is misjudging the case, that the time experience up there is much longer than contemporary time down here. A bit like Narnian time. Like, Earth has perhaps one million prayers directed to Mary in 1 second, but Mary experiences 1 year to assess them all the while spending even more time in worshipping God or in rejoicing with other saints already up there. Alternatively, God could be telling Her "so and so many are asking for a marriage, so and so many are asking for strength to combat a sin" and so on. But even that involves some dose of "Narnian time" so I prefer using it so the saints have the time to assess things.

A third thing. By prophecy, Jesus was every moment of His earthly life (yes, from Conception) aware of each person who is part of His mystical body. The saints and not least Mary could obviously also, and this is what Trent Horn seems to suggest, be sharing in that richness of prophetic knowledge.