I'm looking at SFO-FCO on SAS and I see that the fare rule allows stopovers, but it doesn't seem possible to book a stopover or three-leg flight at sas.com. I suppose I could try their call center, but of course it's really difficult to browse options over the phone. Is there any way to search/book this on sas.com, or am I going to be forced to a online travel agent? I suppose maybe I'm forced in that direction already, as even without getting into the stopover -- just looking at the basic round trip -- Google Flights and ITA show me flights/prices that don't appear on sas.com. Any tips about booking directly with SAS, or suggestion for an OTA that's not totally crooked?