The relationship of the freestanding altar to the reredos is done perfectly and there are not two altars but a single unit although the altar is detached and freestanding. That’s the way to do it!
This video shows stunning new reredos placed into a church. Three to be exact. The reveal is amazing; but it seems to me to be too theatrical and not necessarily prayerful. But maybe it doesn’t need to be prayerful or even liturgical.
It is a wow moment though. What do you think? First, about the reredos and secondly about the reveal? Is it too secular? This kind of reveal is done at beatifications in Rome when covered portraits are uncovered.