Data content that is to be utilized, as a whole, at a target device on-board a vehicle is apportioned for delivery onto the vehicle via multiple forward links, each of which is included in a different frequency band and/or used a different protocol. A mapping or selection of a specific portion of the data content for a specific forward link may based on a data content type of the specific portion, as well as on other dynamic or static criteria. The target device may operate on the subsets of the data content as it receives each subset. Thus, time critical/foundational portions of the data content may be delivered using a faster forward link, larger elements of the data content may be delivered using a higher-bandwidth forward link, and/or portions of the data content requiring a higher degree of accuracy may be delivered using a more robust forward link, for example.