In the first log, the replicator is waiting to receive one revision from the server (Now waiting for 1 'rev' messages; 1 known sequences pending), but it never arrives, at least in the part of the log you’ve shown.
I’m suspicious of the line
W/C4Socket: completedWrite(long) handle -> 4089772456, byteCount -> 263
It’s a warning, so it may indicate a network error, but LiteCore doesn’t get notified of the error. This warning message seems to be in JNI or Java code since I can’t find it in LiteCore itself. @blake.meike, do you know what that warning means?