The four gods all went silent upon hearing Odin, they knew that he wasn't joking around, and that he was serious about crossing into the other plain, but it came with a fair share of risk.
It was something that the other gods had frequently discussed, but they didn't have the means to cross plains, which was the first hurdle, and then there was the risk factor of going to another plain without having any knowledge about it.
The searches done on the plain invaders were always unfruitful, so their knowledge on the other plain was abysmally small, what they had just learned was probably the greatest leap in intel they got, and it was almost negligible.
When compared to the plain invaders, that targeted their plain from the time the boundaries of the plain weakened and gathered intel about them, they were at severe disadvantage in this war.