The present disclosure describes systems and methods for a user equipment wirelessly communicating with another user equipment using dual connectivity (DC) with a terrestrial base station and a satellite or high-altitude platform. The described methods and systems include a principal routing manager assessing that different subsets of data, to be transmitted from the user equipment to the other user equipment, can use different, respective qualities of service (QoS) offered through different wireless-communication networks associated with the terrestrial base station and the satellite or high-altitude platform. The principal routing manager causes a routing command message to be sent to the user equipment, directing the user equipment to enter a state of dual connectivity with the terrestrial base station and the satellite or high-altitude platform and transmit the different of the data in accordance with the QoS offered by the different wireless-communication networks that are associated with the terrestrial base station and satellite or high-altitude platform.