connecting beolab speakers to a loewe tv is beyond easy as long as its a model which has the dolby digital dts decoder built in, all you require is the digital audiolink adapter which you get from loewe it connects to the tv via rj45 cable, the older audiolink cables screwed into the tv itself.
The end of the audiolink cable has pre-out sockets on the end which all you would need is rca audio cables split the cables and connect one to each beolab speaker with the other ends going into the right and left pre-out sockets on the loewe tv then set the speaker switch to line on the speakers.
Then go into the audio settings on the tv telling it that your using powered speakers and from there you can set speaker distances and frequencies via the tv, once done you use the the loewes remote for volume which outputs sound to the speakers.
The beolabs will turn on and off when they sense a signal from the tv, how i know this well ive done this twice once when i owned beolab 17s and the second time was when i had the beolab 14s used with a loewe individual slim frame tv.
It didn't require any trigger solutions for the speakers. i would love to have a pair of lab 20s with an loewe refrence 55 uhd tv as the latest models come equipped with dolby true hd and dts hd audio built in.