The short answer is that the V6 remote uses RF to talk to the V6 & not IR. This allows the V6 to be hidden away in a cabinet out of line of sight & still be controlled. It can even be controlled from another room.
VIP pack with VIVID 350. Freeview/Freesat HD, Virgin Mobile, Tesco Mobile. Cable customer since 1993
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.
Yes it can be done, on the smart Samsung Remote using the lowest button on the right of the Remote just push up from the bottom without pressing it to go up a Channel and push down on the button without pressing it to go down a Channel.
My smart remote works my V6 Box fine, and all I did was follow the instructions on the TV I have a UE 49 MU7000 that's 20 months old and honestly I've never had a problem, it also controls my other devices that are connected to the one connect box, if I was you I'd just start again and make sure everything connected is turned on, it should work fine then.