We have had continuing diplomatic ties during the past four years. We just didn’t have an Ambassador at our embassy in Damascus. However, the Embassy was staffed and operating by American diplomats headed by a Charge’. And the Syrians have had their embassy operating in Washington DC during the past four years.
So there is something else here besides “restoring diplomatic ties”, kabar.
An indication of a favorable view toward Syria and its interests? That would surprise none of us.