How lightmaps affect drawcalls.

So unity will do 1 drawcall for every seperate object with a seperate material, correct? So does this apply to lightmaps as well? So if you have one object, with one material on it, but it ends up requiring two lightmaps to light the whole object, will that result in 2 drawcalls? And if so, the unity function that lays out uv lightmaps, does it intelligently try to pack objects with the same material all onto the same lightmap?