If depends on how you set up the RAF links.

If it is:
A to B.
B to C.
C to D.
D to E.

Then BCDE will get RAF, when grouped together, and within 4 levels of each other and at level 59 or lower.




If your set up was:
A to B
A to C
C to D
D to E

Then the only way B gets experience is if they qualify from their link to A.
So A and B, would need to be similar level etc.

Not really sure how you have the accounts linked.
But that is likely the culprit.