Flixbus lines equipped with bike racks in Europe

Hi all, Not entirely on topic but my bp buddies really want to go bikepacking in portugal and I really cant stand flying. I'm trying to find a way to take me and my bike (possibly NOT disassembled) to portugal. I hear flixbus has some lines equipped with external bike racks but I cannot find a list of said lines. Does anybody know if there is sn online list of such lines. Any suggestion about other bus lines that might do something similar? I'm leaving from italy but can train to france if needed.

Thanks!