Sadly, I find this happens to many a group. In one such I go to there'll be a conversation at one end of the table which only a select few can hear. I don't think it's necessarily done on purpose, but I think it's a bit inconsiderate. It's especially difficult for those of us with hearing difficulties. I can only hear one conversation at a time.
Groups change over time as well. Ours has changed into a teaching session which really isn't for me, and I feel less inclined to go each week. I don't know what the answer is OP, but I feel for you. It's unpleasant to feel left out. Could you perhaps start up a smaller group at your home instead?
34 year old assisted euthanasia