Aligning received BDIs with received data on a cross-chip link including receiving, from the cross-chip link, a control flit comprising incoming data flit information for a plurality of incoming data flits; adding the incoming data flit information to a control structure; receiving, from the cross-chip link, the plurality of incoming data flits; directing each of the plurality of incoming data flits to virtual channel queues based on the incoming data flit information at a first read pointer in the control structure; receiving a bookend flit comprising a plurality of BDIs for the plurality of data flits; and associating each of the BDIs with the plurality of data flits based on the incoming data flit information at a second read pointer in the control structure.