Apple watch and health kit sync

I have a question about the Apple Watch and Health kit integration. I searched and found a little info but would like some clarification. I have a Fossil Q Grant. It syncs to health kit and measures steps etc through its app. I recently added an Apple Watch. I don't want to wear it to work daily and bang the stainless up so I will wear the Q. Now when I get home and change watches for the night. Activity tracker shows no steps/calories burned. I don't see any setting to make these two talk and as they are both native apps shouldn't they sync? Am I missing something?

Thanks for the help in advance.

Jeremy