Now the question is suppose an eavesdropper can listen in on this link and can listen in on this link,
so it has a way to listen on the outcoming links from me and the incoming links to Alice,
can they determine that we're communicating?
No.   Yes, if there's no similar traffic on the network.
Yes, if there is a way to correlate message 1 and message 2.
And yes, if the adversary can see all the traffic on the entire network.
