How in B2C sign-up Email Verification control “Verify Code” button to open Registration page

Question

The sample “Separate the Email Verification and User Registration into 2 separate screens” https://github.com/azure-ad-b2c/samples/tree/master/policies/split-email-verification-and-signup has separate steps :
2. Click “Verify code” that returns message “You can now continue” and then
3 click “Continue” to open Registration page.

Continue button is redundant. How can I combine the steps and if “Verify code” is successful, redirect to next page?

Note that I am using emailVerificationControl to connect to email provider similar to Azure B2C ClaimsTransformation error with Display Control OutputClaim

Update: I’ve implemented some hack as I described in How to add JavaScript event handlers for action completion in B2C emailVerificationControl? , but I wish to hear about better, more out-of-box solution.