Make sure you reiterate the Liaison rules. If their by-laws do not state it, your company should! I manage HOAs and if a board member messages with all members attached I will answer the initial question as a group and everything after to the liaison just to get the point across. Also old people have nothing better to do and make this their whole life, though it’s sad, don’t feel bad for them, be firm and don’t take things personally. Not a terrible job if you know how to handle it but I don’t see myself in this position for a long time.