In our previous post, we described a 2-round partially synchronous BFT protocol for $n = 5f+1$. In this follow-up post, we push the bound to $n = 5f-1$, achieving optimal 2-round commit in the Simplex style. We then extend the result to $n=3f+2p-1$ for $0<p\leq f$ that obtains liveness for...