Will and Sarah's connection

From what I can gather all sensates were born sensates, which is why people in the same cluster have the same birthday and take their first breaths together. It isn't until later when someone activates their connection to their other selves in the cluster that they become aware of them, which is what Angelica does. Will and Sarah are both sensates, who made eye contact with each other when they were children hence their connection, to one another, even though he is still unaware of the rest of his cluster, or knows what is happening. He doesn't make eye contact with Whispers or Jonas until he his older. A similar thing happens between Riley and Yrsa in Iceland when Riley was still a child. Yrsa made eye contact with her at some point which is what connected them and then used that connection to try and keep her safe from Whispers and the Biologic Preservation Organization. So even though both Will and Riley were unaware of the rest of the cluster, it is shown that they still have some sensate abilities.