Sauna-Avanto with Royal Carriage

[therem.harth]

Hi,

When I play Sauna and chain it with an Avanto, if I have a Royal Carriage on mat, then I get two choices for calling the Royal Carriage below the log. The first one is calling RC for Sauna, and the second is for Avanto.
This is what I would expect, but it could be more clear.

cheers,
atakan