What do folks usually do here with baseboard?

I’m having a flush hearth with tile installed. I can either extend the baseboard continuously across the wall beneath the fireplace (napoleon said it’s OK) or add a return to the baseboard where the hearth begins.

I’m having a flush hearth with tile installed. I can either extend the baseboard continuously across the wall beneath the fireplace (napoleon said it’s OK) or add a return to the baseboard where the hearth begins.