Not sure exactly what you're asking.
You do not need prior A/I research to apply to Chrysalis or SPARK. I don't think doing those programs is going to get you connected with a research. The idea of these programs is to get you some exposure to the field of A/I and the respective conferences. You will meet other residents interested in A/I. You will also be introduced, and usually paired up, with one or more fellows. There are usually faculty and PDs that participate as well. I'm not sure how this would connect you to research unless you happened to connect with a neighboring institution near you that does have a program (eg You are at university of Minnesota and connect with someone at Mayo or something like that). However, you don't need one of these programs to do this. You can just reach out to faculty at neighboring institutions. Also, even if your institution doesn't have an a/I fellowship, they must have some a/I faculty, yeah? You can always try and work with them to publish some cases or something.
I'm not sure of the overall benefit to an applicant when it comes to attending those programs. I didn't. Certainly don't think it hurts if you don't. If you do, it shows interest, but I doubt it's moving anyone up the pile. If you can use it to network and meet some people, that can help, but not sure how well that works. My experience is they make applicants and fellows wake up super early in the morning to attend some meet and greet breakfast. People small talk at the table and then forget the conversation. If you left a really good impression on a fellow or faculty member, it could get you bumped up the rank list I suppose.