Amazon Sidewalk max payload size.

The Payload data for IoT Wireless SendDataToWirelessDevice to states that the max payload size can be up to 2048. I see in the API docs for sidewalk that there is a max MTU of 255 for BLE and 44 for LORA. Does that mean anything over these MTU lengths needs to be sent in separate messages or can you send up to 2048 and the MTU chunks are handled by the gateway?

Thanks, Luke