A:Answer No, as others have said, this soundbar can only receive a Bluetooth signal, not transmit one.
You need something like this device: ClearSounds - Stereo TV Bluetooth Transmitter, Model: CLS-CS-QLINK SKU: 6550046, which I assume would be able to pair with your father's hearing aid. But I I would also double-check the hearing aid specs/manual and/or call the manufacturer (and probably ClearSounds we well) to verify that.