Mosimane enjoyed the occasion immensely despite South Africa's narrow 32-30 defeat to New Zealand at Loftus Versfeld in Tshwane.
"It's unbelievable that SARU decided that I should hold the national flag in such a big game like that. Humbling and a different experience," Mosimane said.
"I have never seen Loftus Stadium like that. What a game to be invited to. You feel like a small boy carrying the flag. You get goosebumps when the national anthem starts because the flag is on you. It's another experience, it's another level. It's one of my highlights as a person. You know where the country is coming from, the background. It's humbling to see that."
Mosimane wishes a similar atmosphere in the stands could be carried across to local football, having recently been involved in an ugly incident at King Zwelithini Stadium.
The former Bafana Bafana coach is currently facing an assault charge after getting into a scuffle with a security guard following his side's 3-3 draw with AmaZulu at the venue in Umlazi on September 16.
At the final whistle, two Sundowns fans in club regalia invaded the pitch. When security started taking them away, Mosimane intervened as he felt they were being too rough, and a melee ensued.
"All I wish is that it be converted to football," Mosimane said.
"Good vibe, people are happy, nice. They are drinking. Nobody beat one another. There are no issues. People are happy, people hug one another.
"I saw a lot of people inside the pitch, no issues. In football supporters come [on the pitch] and want to give you a gift, someone pounces on him. You know me, I lose the plot. I was called by the DC, it's an assault.
"Against Barca, a supporter came in. You were there, what did I do? I hugged him, I ushered him out. It's not the first time I usher them out. That's what happened in Durban. It's an assault.
"Where is the human part of football? Can I show that against the other team? I saw another coach in Maritzburg's Mandla Ncikazi, a good friend. He did this [points a finger] to [Ernst] Middendorp. Remember that case? How long did it take? It took a year. He did this to the referee live on TV. If I do that it's a life sentence."