Comment by ncruces

For a given connection, (most) packages might go through (e.g.) 10 links. If one link goes down (or is saturated and dropping packets) the connection is supposed to route around it.

So, except for the links on either of end going down (one end really, if the other is on a “data center” the TCP connection is likely terminated in a “server” with redundant networking) you wouldn't want to have a connection terminated just because a link died.

That's explicitly against the goal of a packed switched network.