This is not possible.

A couple potential work-arounds: 1) Display the information in a separate Flow screen. You can hide the EmbeddedLink component you have until a user selects an option from the RadioButtonsGroup (you'll need to make your RadioButtonsGroup component a dynamic one which requires an endpoint if you don't already have one.

2) [Not recommended] If you can't find a work-around that keeps this within the Flow experience, you can resort to the chat thread. Once a user selects an option, you can complete the Flow, and offer additional information via the chat thread, or an option to resume the process with a separate Flow.