I need to add a second water outlet to a pipe :
I bought a T, but the pipe is very close to the wall, so I cannot screw the tee :
I think the pipe is not only screwed to the wall by the visible screws (oval red in the picture) but also there is probably some glue (red arrow):
What is the right process in that case ?
Should I cut through the glue with a knife and unscrew the screws, install the T, and re-install everything? That seems a little complicated, and also, I was unable to unscrew the screws (old screws).
So I thought about installing the T at the bottom of the flexible pipe:
What is the right procedure here? What would a good plumber do?