This disclosure provides systems, methods, and devices for wireless communication that support hybrid systems sidelink (SL) operations. In a first aspect, an apparatus obtains a resource reservation for a subsequent transmission over an SL, the reservation of a resource in a resource pool, and the resource spanning at least one sub-channel of a plurality of sub-channels. The apparatus further transmits an indication of the resource reservation to at least one other UE, where the UE is of a first type and the at least one other UE is of a second type. Other aspects and features are also claimed and described.