Concierge to update GTN navigation database through GI275 (GTN database only)

I have a GTN 750XI and dual GI 275s.  I only need an active Nav database subscription for my GTN 750 XI.  I am able to use concierge on Garmin Pilot to update the Nav database on my GTN 750 XI using GI 275 wireless interface? Implicit in the question is that I understand  the Nav datbase in teh GI 275s woudl be out of date.