To all those who may follow this thread with genuine interest in the subject.
Yes, it is possible to transmit TV sounds to the N7 real-time by using only an Android phone without the Cochlear TV transmitter.
It is through WiFi. Silly enough, I did not consider this before. For this, the TV has to be attached to a PC / laptop as a monitor. This is my setup, anyway. The phone connects to the PC (the server) as a client via WiFi, and streams all sounds from the PC to the phone, real time while the movie / TV etc playing, and the sound (as any other sound) from the mobile is transmitted to the N7 via BT.
Problem solved.
I am still thinking / researching a BT alternative, as it would be much neater. So if anyone has an idea, or genuine constructive comment to my previous response to @biggar, and to my idea within that and a previous post, please come forward. The crux of the problem is to use a mobile (with an appropriate app) as a BT receiver and transmitter in the same time.
Due to the prior personal attacks against me, I may not hang out on this forum too much longer. So if there is any comment / question re. the WiFi version (which definitely works) let me know.
Cheers