Question about new A/A Waypoint and BRA functionality

I apologize if i get the terms wrong im not fully up to speed on A/A radar terms and such.

I recall in a previous A/A Radar video that if you had the radar set to a small scan area or a very large area where a contact will fade before the next pass, you could put the TDC in the spot after the contact faded away and push TDC to get a STT (i think that's the term) as it would focus the beam on the TDC point.

That said, with the ability to now mark the A/A radar with the bullseye, and to get 'picture' from AWACS, would it be possible to put the TDC in the correct location to lock a target with little or no exposure of your active radar before the lock?

So to go from from passive or standby (or whatever) directly to STT lock, or to go from a very focused downlooking beam that may not light up a targets RWR directly to a STT lock?

I would imagine so, but you'd still be under the restrictions of the antenna elevation and bar scan amount to ensure the target isn't above or below your scan volume.