Yeah sure. My understanding of RSA takes trains (Up and Down) as one entity. Which is why I updated this. In the sense that "Chennai Mail has RSA with Chennai Express". However, if you break it down to the level of individual rakes, I do agree to
/blog/post/2154874 in which case I'd still recommend putting "11027 -> 11042 -> 11027 ; 11028 -> 11041 -> 11028" for both the UP and DOWN trains. If still the consensus is to limit it to "11027", please revert it back to the original value. In such a case, taking responsibility of this update, I apologize.