If we are all One in reality, at a higher level, perhaps in absolute terms, then we should start to realise that we are all inter-connected to such a degree that the connections are real!
It seems so difficult to me, sometimes, to try to feel the connections in everyday experience, yet in other times of love and intimacy it feels so simple, obvious and natural!
Perhaps we will only ever experience universal connectedness, as One, when we have universal love and compassion?