First of all, as you know, the main purpose of the Land Recovery is powering the SFCC (Slat Flap Control Computer). It also energizes LGCIU because we and several systems need to know the landing gear in down and locked position. LGCIU provides information to tons of systems including nav, air cond, fuel, hyd system, etc, even toilet system
as an example, simply the GPWS gets that information to prevent a TOO LOW GEAR warning.