hobbya,
I think the idea of sending the data set twice would work if we implement the code. I am currently working on a way to send the data in a scan response for comparison.
The following directory has an example of sending local names in a scan response. Peripheral puts the local name in the scan response packet, but Central is not able to retrieve it properly. I am in the process of trying to figure out if the cause is wrong code or if the functionality is not implemented. I still need more time.
\Arduino15\packages\Seeeduino\hardware\nrf52\1.1.1\libraries\Bluefruit52Lib\examples\Projects\rssi_proximity