In general, yes, that is what I would say is overdrawing. It, of course depends on physical stature AND the style you are pursuing.
If you pull too far, the arrow nock must travel along the side of your face and then will not be below the eye.
Others will jump in here with a bazillion examples of folks doing that and shooting well, YEP that's very possible/likely.
Since you are using or have used the arrow nock under the eye, then what you describe can be a cause of loss of accuracy.
Arne