1. It sounds like you are talking about two different companies/start-ups. If they are not truly linked, than treat them as two different companies.
2. To use "endorsement branding" like "XYZ - a service from ABC company" is for many reasons not viable for a start-up. Take the user/buyer perspective: Why are they telling me this if the two services are not related? What brand should I remember?
3. If you use a generic describing name on your company that is to narrow to be an umbrella for all related services, then you have a real problem. The company "BestNewYorkTaxis" will have a problem expanding into Boston...
4. Always check that your new business name is not confusingly similar to an existing trademark. You can do that comprehensive trademark search for free at our site http://www.markify.com/
2. To use "endorsement branding" like "XYZ - a service from ABC company" is for many reasons not viable for a start-up. Take the user/buyer perspective: Why are they telling me this if the two services are not related? What brand should I remember?
3. If you use a generic describing name on your company that is to narrow to be an umbrella for all related services, then you have a real problem. The company "BestNewYorkTaxis" will have a problem expanding into Boston...
4. Always check that your new business name is not confusingly similar to an existing trademark. You can do that comprehensive trademark search for free at our site http://www.markify.com/
Benoit