How on earth could "Those Who Have Not Associated for Many Years" also "have a measure of contact or association with the congregation"??? They're mutually exclusive.
I believe it is intended thus: People who are no longer affiliated may work with or have a social relationship with members of the congregation.
Shortly after I ceased attendance, one of the elders addressing my reservations regarding the Watch Tower Society stated that if I doubted that the Society is who they claim to be, he was certain I would "write a letter" [disassociating myself]. I didn't respond and the matter was dropped. At another interrogation, a different elder asked: "But you still believe that the Society is God's Organisation, right?" I told them that my research into the Society's history raised grave doubts and that it devolved on them to address my concerns. They did not do so, of course. But they also did not disfellowship me.