Session migration on APM

Hi, First of all thank you guys,

This is not a linked websites both pages are on same domain/app. The main issue is caused by chrome and third party ofba (not sharepoint), And Im using form based to push the credentials to it.

The user is extract from smart-card / saml (app works just fine using kdc delegation), the only problem is when the ofba pop-up. and so the user I have all the time and password I use from logon page only for the form,

in explorer it works perfectly and in chrome for some unknown reason opens a second session when ofba page arrives and form sso brakes on error there is no password.

The office is excluded from the apm and ofba are in, as if the office is in flow there is about 10 broken sessions both explorer and chrome. But again in explorer it works perfectly. ..

I didn't fully understand how multiple domain should assist here,