Canonically, moving during transport is pre-TNG, even. It first appeared in one of the TOS-cast feature films - maybe even the first: “The Motion Picture.” I don’t recall off the top of my head. But pattern buffers themselves I think weren’t “invented” until after the TOS generation. Probably introduced to address the horribly transporter accidents that could occur, as in the films. Anyway, I don’t think they had the buffer technology before TNG, and I don’t think it affected one east or 'tother whether people could move and talk during transport. I think that was more a result of the capabilities of period FX.
Canonically, moving during transport is pre-TNG, even. It first appeared in one of the TOS-cast feature films - maybe even the first: “The Motion Picture.” I don’t recall off the top of my head. But pattern buffers themselves I think weren’t “invented” until after the TOS generation. Probably introduced to address the horribly transporter accidents that could occur, as in the films. Anyway, I don’t think they had the buffer technology before TNG, and I don’t think it affected one east or 'tother whether people could move and talk during transport. I think that was more a result of the capabilities of period FX.