TCP Congestion avoidance vs slow start

Hi All,

Apologies if this does not meet the subs requirements in advance.

I've been studying TCP and reading RFCs 2001,2581, and 5681.

Slow start states for each ACK the Congestion Window will be incremented by 1*MSS for each ACK received. Or in the newer RFC cwnd += min (N, SMSS) where N is the in-flight bytes.

congestion avoidance states the Congestion Window will be increased by 1*MSS per 1 RTT.

Is the above correct. Is there anything I'm missing? Please note i specifically ask about the increments in the congestion window. Not Fast Retransmit/Fast Recovery or SSTHRESH.

Thanks in advance