Our neighbours, both in their 80s, are very pleasant and we get on well with them in a "pass the time of day" way when we see them outside in the garden or at the front of our house. They moved in about 4 years ago. However, over the last few weeks we have noticed that their TV noise is much more noticeable in the evening and is becoming a distraction. We are semi-detached and their house is attached to ours with the living spaces attached.
I can only think that they have bought a new TV, or that they have re-sited their TV or bought a Sound Bar or something like that. Or their hearing has deteriorated and they have turned the sound up on their TV to be able to hear it more clearly.
How do I bring up the subject to tell them that the sound from their TV is now much more intrusive in our living room in the evening wihtout causing offense?