The verdict
If your form is poor, or you have none, start with Fillout. It writes to many tools through native integrations, so you may not need a connector at all. If the data already arrives but people copy it by hand between tools, start with Make.
When both gaps exist, use both. Fillout collects and Make handles the branching, the loops and the clean-up. I would try the native integration first, because fewer moving parts break less often.