Hi @1Morty1,
Welcome to the Sony Online Community! I'm afraid that your KDL-43WF66 TV with a Linux operating system does not support any Bluetooth connection profiles. I hope you haven't been told otherwise.
Your only option is to use the built-in codes specified by your programmable remote control to control your Sony TV through standard IR commands. You might be required to test a number of different Sony TV codes specified in your programmable remote control manual, to see which code covers most commands for your TV.
Cheers,
Dutchice
