"What do you mean by round?" Because Hashgraph is BFT, a round is a round of voting for confirmation. Its done virtually but you have to have 2/3rds of nodes

"What do you mean by round?" Because Hashgraph is BFT, a round is a round of voting for confirmation. Its done virtually but you have to have 2/3rds of nodes agree on the state to close a round and have a confirmed state. To have 2/3rds you have to have a fixed and known number of nodes in the round. See BFT for more information. The point I was trying to make, is that they are very different in benefits and limitations.