This is the subset of ceSctpStatChunksSent that are SCTP control chunks, such as INIT, SACK, or HEARTBEAT, rather than data. A high proportion of control chunks relative to data chunks device-wide can indicate excessive heartbeating or SACK churn, often from an aggressively tuned or misbehaving peer stack, adding load without carrying signaling payload. Control-chunk counts tripling while data-chunk counts stay flat suggests peers are sending far more heartbeats and SACKs than the actual signaling traffic warrants.