I heard more explanations.
Israel (and US?) have extremely high tech radio & internet monitoring programs. They have the money & the management.
HAMAS waged a low tech strategy. There were low tech warnings. But there was no hi tech warnings not hi tech confirmation of the low tech warnings. So the warnings were ignored.
Which leads to a point I’ve been making about technology and the military.
Most of our military depends on satelittes, but if WWIII breaks out, the first thing that goes are the satellites....then what?
Kinda what I’m thinking. No doubt they’ve studied the capabilities and have worked to evade them.