Yes!
You can run multiple instances of the Klipper companion, Bambu Connect, or Elegoo Connect plugin on the same Raspberry Pi. The only limit is the device’s CPU power. A Raspberry Pi 4 can usually run 5-6 plugins with no issue.
To set up multiple plug-ins on a single device, run the install script once for each 3D printer. Each time a script runs, you will be prompted to recover an existing plug-in or create a new one.