I'm not sure I fully understand your scenario, but it sounds like you are after our Test as Step
feature. You can create a parent test and insert a child test in it, which will do all desired verifications.
Please check out this KB article
on "Repeating actions for multiple users with login" for detailed explanation.
For example you can do something like that:
Create Test A with 3 steps
1) Registration to website (data bound to allow for multiple users with different credentials)
2) Test as Step (Test B)
where Test B is also data bound to a different data source and performs a data driven verification.
Note that the child test will execute all iterations from its data source before returning to the main Test A.
If this is not what you want, please explain your exact scenario in details and we'll do our best to provide a proper solution.
Hope to here from you soon!
All the best,
the Telerik team