As far as I know, you must choose between the options and that means that they will not roll up in the same default survey analytics.
However, if you have access to custom surveys, you should also have access to the custom report builder where you can create a custom report on Feedback submissions. You can set up a custom report to pull in the data of multiple surveys. (Menu > Reports > Reports > Create report > Custom report builder > data source Feedback submissions)
Let me know if you have any follow-up questions!
Karsten Köhler HubSpot Freelancer | RevOps & CRM Consultant | Community Hall of Famer