ABC was able to tie CBS in the key age 18 to 49 demographic last night. with a ?Grey?s Anatomy? episode that introduced characters from its ?Station 19? spinoff, as well as a ?Scandal? and ?How to Get Away With Murder? crossover. However, the Les Moonves-led network still ran away with Thursday?s viewer crown. They took the cake in large part to ?Big Bang Theory? and ?Young Sheldon.? NBC finished in third place outright.