Merging Open Text Questions from multiple surveys

I have a CX dashboard where I would like to utilize textiq widgets, however I would like to analyze and display all the open text questions as though they were one question to capture a wider picture. I know that if it was only one survey that had multiple open text questions I would go into field editor  and create a merge field. I am unsure of the best way to go about this being that is more than one survey we’re pulling from and each of the surveys has 2+ open text questions.