Installing flange on recessed toilet pipe

[Cwickedstare]

I am replacing part of a subfloor that already had a recessed toilet drain pipe. We haven't secured the floor yet because we already have confusion on how the flange should rest on the recessed pipe. We want the flange to secure on the finished floor but at that height the flange doesnt rest on the pipe. Its an oatey twist n set. Can the flange rest on the tile with this gap (about an inch)or do i have to cut a larger radius of the subfloor out in order to drop the flange down to rest snug on the pipe and then build up with spacers? I tried my best to display the gap as if backer & tile was installed. Its the red line in pic & about an in or 1 1/8 gap between top of pipe to flange

 

[Cwickedstare]

A

I am replacing part of a subfloor that already had a recessed toilet drain pipe. We haven't secured the floor yet because we already have confusion on how the flange should rest on the recessed pipe. We want the flange to secure on the finished floor but at that height the flange doesnt rest on the pipe. Its an oatey twist n set. Can the flange rest on the tile with this gap (about an inch)or do i have to cut a larger radius of the subfloor out in order to drop the flange down to rest snug on the pipe and then build up with spacers? I tried my best to display the gap as if backer & tile was installed. Its the red line in pic & about an in or 1 1/8 gap between top of pipe to flange

 

[Geofd]

how much go the flange is in the pipe?
yes the flange can rest on the floor
use stainless steel screws to anchor

 

[Cwickedstare]

how much go the flange is in the pipe?
yes the flange can rest on the floor
use stainless steel screws to anchor

Below green line was in the pipe. Looks like 2 1/4 inches

 

[Cwickedstare]

This is how the plumber had it before, the twist n set flange on top of a damaged metal ring flange so i thought maybe he was trying to fill the gap but he never came back to finish the job so i got stuck with it.