How Scotty likes to greet Nurse Chapel:

I did not realize Han Solo made an appearance in Star Trek.

My headcanon is that Number One is the in-universe voice actor for ship computers in Starfleet. Once they made the computer model of her voice, it remained in use all the way to the TNG era.

I doubt Lwaxana Troi would have been interested in sitting still for a hundred hours of voice recording.