Not an expert....but maybe you can try (at your own risk :whistling.... Can I use its 'Multi Channel In' (6-Jacks) to tie to the Onky's 'Pre Out'? ...
I recall a similar question on older threads, the suggestion was to use the Tape to make the loop on both receivers (I don't think you have one in your Sony, but maybe you can use another source (Video??? that has input and output on both receivers :huh.
Let's see what the experts say...:innocent: