Except that's not really the network path that's going on, right? If I am on A and connect to B and then want to use the network to transfer a bunch of data from B to C over an ssh channel between them, using ProxyJump brings it all back to the bastion box. And if A is in the US and B & C are in Europe connected with a 40 GB LAN, using proxyjump will bring the connection from B->C into Europe->US->Europe. How do I do this with my credentials existing on A being used to log in to B and then the same credentials being used to connect from B to C while only having the one network connection is B->C and not to my bastion host?