The present disclosure is directed to using feedback information regarding a data stream being sent from a sending endpoint to a receiving endpoint. Both of the sending endpoint and the receiving endpoint each have multiple physical interfaces connecting the sending endpoint and the receiving endpoint to multiple networks, respectively, and the data stream is split into a series of data packets and sent over the multiple physical interfaces. Different portions of the data packets are sent over different ones physical interfaces based at least partially on a data capacity throughput for each of the multiple physical interfaces. Feedback information is gathered for each of the multiple physical interfaces. Feedback information gathered at the receiving endpoint is split and sent to the sending endpoint on one or more of the physical interfaces. Data packets are then reapportioned and sent over different ones of the physical interfaces based on the feedback information.