That tindie board requires the whole input cover. You can see that the keyboard ribbon cables connect to the board marked “Touchpad” then it’s the ribbon cable coming from the Touchpad board that connects to the tindie board.
You could use just the keyboard but you’ll need a different control board. Not sure if someone has made one already. The touchpad board isn’t needed, seems to be only passing along the keyboard signals, but that tindie board doesn’t have connectors to directly plug the keyboard in. If you or anyone else wishes to make a board, information on the connector, pinout and matrix layout can be found here Reusing Keyboard after Replacement - #9 by nrp
@Any Framework staff who might wander by, Framework-Laptop-13/Pinouts.md on your github doesn’t appear to include the pinout of the keyboard cables. It has the Input Cover Interface, which passes the keyboard signals but not the pinout for the cables directly connected to the keyboard. Other daugherboards are there but not the touchpad board.