@Lee500
No-one here can tell you that.
If you have the 'Ultimate TV' Sky subscription then signing into the Netflix app on a Sky Q box using existing Netflix credentials should generate an instruction to Netflix to shift billing to Sky.
If you don't have 'Ultimate TV' or you used a different login to sign into the app then that can't happen.
https://www.sky.com/help/articles/apps-on-sky-q-and-glass-netflix
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Sky Glass 55" (on ethernet) & two Stream Pucks (one ethernet / one WiFi)
BT Halo 3+ Ultrafast FTTP (500Mbs), BT Smart Hub 2
