Olivia Kernick says the Roosters' on-field understanding is difficult to explain.
"I feel like we just have this connection on the field where ... I don't even know how to explain it," says lock Olivia Kernick.
"I guess it's just a feeling, almost like a sixth sense, where you can all almost predict what each other are going to do on the field.
Everyone knows each other's tells or what's going to happen next before that player might even do something."
The Roosters have trailed for only 70 of their 840 minutes of NRLW football this season.
They have therefore spent 770 minutes in front, a run of coordinated play that has helped keep the Tricolours unbeaten.
They head into Sunday's grand final against Brisbane undefeated.