Infovista interview questions

Technical questions in 20 mins interview, not replying back for more than 15 days, interviewer was very nice and friendly but no answers after saying he will get back. Even after following up from my side, so i still have no answer

HR Talent Acquisition call, Manager Call (in this case, CHRO), Local HR for finalizing offer. I came recommended (they have a referral program in place), they already had reached out to my previous manager for references.