Do you work from home using the same IP? If I understand your question correctly, the answer would be 1. In most cases, they're doing cookie based tracking and

Do you work from home using the same IP? If I understand your question correctly, the answer would be 1. In most cases, they're doing cookie based tracking and you wouldn't have any crossover unless it was site specific retargetting and you've logged into an account on both platforms. If there's any crossover, its because you have the same browsing behaviors on both platforms.