Triggering email verification

I am using custom policies.

The user journey desired is:

1. User enters the email/password on screen 1.
2. On successful validation of screen 1, the user is sent to screen 2. In screen 2 user has to enter a code sent to their email. (Note the user has already verified the email during sign up)

I am stuck at getting 2 to work. The current policy looks like this: Step 1 outputs email claim.

Step 2 takes the email claim as input.

In step 2 an editable text box with email prefilled is presented. No code is asked for. However, if the email is edited a code is asked for.

<TechnicalProfile Id="VerifyEmailAddress">
  <DisplayName>Local Account Signin</DisplayName>
  <Protocol Name="Proprietary" Handler="Web.TPEngine.Providers.SelfAssertedAttributeProvider, Web.TPEngine, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
  <Metadata>
    <Item Key="ContentDefinitionReferenceId">api.selfasserted</Item>
  </Metadata>
  <IncludeInSso>false</IncludeInSso>
  <InputClaims>
    <InputClaim ClaimTypeReferenceId="signInName" />
  </InputClaims>
  <OutputClaims>
    <OutputClaim ClaimTypeReferenceId="signInName" PartnerClaimType="Verified.Email" Required="true"/>
    <OutputClaim ClaimTypeReferenceId="objectId" />
    <OutputClaim ClaimTypeReferenceId="userPrincipalName" />
    <OutputClaim ClaimTypeReferenceId="authenticationSource" />
  </OutputClaims>
  <ValidationTechnicalProfiles>
    <ValidationTechnicalProfile ReferenceId="AAD-UserReadUsingEmailAddress" />
  </ValidationTechnicalProfiles>
</TechnicalProfile>