No reason it wouldn’t work. Just plug your outputs into your inputs. It depends on which signals you’re feeding back into the module for what kind of ‘flavor’ you’ll get.
If you take an encoder output into a TBC input (like TBC2 or Chromagnon), it is going to be inherently digital because the signal is being converted to a framestore before being decoded back into 1V LZX signals.
If you take any of the 3.5mm jack outputs and feed it back in somewhere into another 3.5mm jack earlier in the module’s signal flow, that has a very different kind of feedback look to it. This is probably more the analog feedback @meudiademorte might be referring to but the key thing is it is not being delayed by a digital frame buffer.
I recall @wiatrob has helpfully differentiated this as re-entrant vs direct feedback.