Any loss of signal, which would be insignificant at any rate, could easily be compensated for by simply increasing the LFE output at the AVR to the sub(s) or at the subs themselves.
Remember, you don’t need a junction at each sub, each sub has a line level output as well, which is intended for just this type of “daisy chaining”.
It’s really the difference between running duplicate cables from the AVR or just one and passing through the signal from one sub to the next.(perhaps two cables depending on the location and number of the subs).


Those who have long enjoyed such privileges as we enjoy forget in time that men died to win them.