> There are at least three independent paths (N+2 redundancy) between any two locations on the Google network, helping ensure that traffic continues to flow between these two locations even in the event of a disruption. As a result, with Premium Tier, your traffic is unaffected by a single fiber cut. In many situations, traffic can flow to and from your application without interruption even with two simultaneous fiber cuts.

What does this mean? N+2 redundancy should mean, that even if both go down, then service will not be affected at all, no?