So, let’s say Hezbollah intervenes, as they have said they will if there’s a ground incursion–and Netanyahu has announced it has started.
Remember that Hezbollah has thousands of missiles and that the Israeli “Iron Dome” couldn’t even keep up with Hamas’s attack.
Hezbollah didn’t have much of a missile force in 2006, and what they had were short range and inaccurate. Still, Israel was unable to find and destroy most of the launch sites and its ground incursion was defeated. Indeed Hezbollah was able to intercept Israeli comms while Israel could not intercept Hezbollah’s comms, since they were based on an underground private system.