Le système d'offloading/balancing permet de répartir la charge par paquet et non par flux, donc on peut utiliser la bande passante combinée avec un seul flux TCP :
If a Service Provider runs heterogeneous networks, such as fixed and
mobile, subscribers might be eager to use those networks
simultaneously for increased access capacity rather than just using a
single network. As shown by the reference model in Figure 1, the
subscriber expects a significantly higher access bandwidth from the
bonding connection than from the DSL connection. In other words,
when the traffic volume exceeds the bandwidth of the DSL connection,
the excess amount may be offloaded to the LTE connection.
Compared to per-flow load-balancing mechanisms, which are widely used
nowadays, the use case described in this document requires a
per-packet offloading approach. For per-flow load balancing, the
maximum bandwidth that may be used by a traffic flow is the bandwidth
of an individual connection, while for per-packet offloading, a
single flow may use the combined bandwidth of the two connections.