Status: IN
Ring topology requires O(N) sync rounds for full convergence because each round advances changes by exactly one hop via store-and-forward requeuing, unlike fully-connected topologies that converge in one round.
Three observations pin convergence delay to the store-and-forward mechanism: apply-remote-change requeues to pending, and pending drains one hop per sync
Depends on (SL): ring-requires-n-minus-one-rounds, ring-topology-needs-multiple-sync-rounds, ring-requeues-via-apply-remote-change