Opeth PRS guitars with two outputs

Greetings and salutations
I noticed a while ago, that both Mikael and Fredrik have two outputs on their PRS guitars when they are playing live. Any idea why or how the signal is routed to their gear?

https://preview.redd.it/m21o25g8imhd1.jpg?width=2048&format=pjpg&auto=webp&s=55f4d7b6bfc805e66e3795c2b572d3baaaaf2eb4

https://preview.redd.it/cm3bvhg8imhd1.jpg?width=2048&format=pjpg&auto=webp&s=ec06f2e6345eadcdc3ba3bf31649f8e8617899eb