It isn't possible to merge 2 survey designs or the results of 2 separate surveys. However, you can compare or combine your data in a few different ways, such as using multi-survey analysis or exporting merged data.
You can compare and combine results from multiple surveys in a multi-survey analysis dashboard. Instead of standard charts, you can use tiles to compare and combine your data from 2 or more surveys to track results over time and across segments.
If you're on an Enterprise plan, you can merge the data from separate surveys by exporting a single CSV or XLS file that includes all responses from both surveys in your dashboard.
When setting up the export, toggle on Merge questions with the same title to combine them into a single column.
If you're looking to combine data within a single survey, you can: