"I wasn't allowed to see my birth mother and father and they weren't allowed to see each other before we went on [set]," Mr Gilbert said. "I was really nervous, I had to be all prepared on what to talk about ... the host is very famous in Russia. I got on stage and he asked me questions about my story and they started showing videos of me."
Mr Gilbert was adopted as a 2-year-old from an orphanage in Archangelsk, Russia in 1994 and had always been curious about his birth parents, eventually travelling as a 21-year-old to meet them, flanked by TVNZ reporters.
He has featured in the Northern Advocate several times over the past year, recounting his journey in 2014 to meet his birth parents and a subsequent online project - "I'm Adopted" - to connect other adopted people with their birth families.
This story was picked up by at least eight Russian news outlets, followed quickly by the talk show invitation.
Mr Gilbert said, looking back on last week's whirlwind trip, "It feels like it didn't really happen - it all happened so fast."
He recounted his bizarre family reunion in front of a studio audience.
"My birth mother Tatiana came out onto the stage and I hadn't seen her [since 2014]. A few people in the audience were saying 'Why did you do this to Alex?' I had a synchronised translator in my ear. Tatiana answered all these questions. Then mum and dad came out and sat down, they met Tatiana and birth dad (Mihail) and it was a bit weird - they all hugged each other on TV. Mihail brought all these flowers and gave them to my birth mother. They hadn't seen each other in 20 years. It was all a bit crazy to be honest."