so my parents had there interview and it went great only thing is the officer kindly told them to get originals of a few documents and to mail them back to the embassy via Mail as they lived a bit far.
but a few hours later, email was received saying that only my father had to come in for a re-interview in like 6 days and also, for both parents to email this form back to the embassy: Supplemental Questions for Visa Applicants - DS-5535 .
very confused