@SunriseSide I have interpreted your photo and placed labels on the two scapes and the leaves I think are between the scapes.
If my interpretation of the photo is correct then the second scape belongs to (is part of) the new/second fan of leaves.
Each leaf in a fan of leaves is produced by the vegetative growing point. After some time (sufficient growth?) the vegetative growing point which sits in the centre of the fan of leaves stops producing leaves. It turns into/becomes the scape. Literally the vegetative growing point becomes the reproductive growing point and produces scape tissue below itself. The reproductive growing point divides itself into smaller and smaller pieces as it makes scape branch growing points until there is none of itself left at the top of the scape. (Bud builders are special in that their reproductive growing points may manage to grow some more tissue as the scape grows taller and they do not get used completely up as quickly as is normal.)
So every scape is produced by a new growing point. Each growing point starts its life by only producing the leaves of a daylily fan. At some time it has matured enough or produced enough leaves or for some other unknown reason it stops being vegetative and literally produces/becomes the scape. There is no escape/(backing out) from becoming the scape (with the minor exception that produces proliferations at scape branch points and which we assume are relatively normal vegetative growing points).
If the daylily plant had started as only one fan of leaves then it must produce a new vegetative growing point when its "original" vegetative growing point becomes its scape. That new vegetative growing point produces leaves (a fan of). To produce a second scape its second vegetative growing point must become that scape. The daylily plant must then produce yet another new vegetative growing point with its fan of leaves.
If there are any daylily cultivars that routinely produce two scapes side by side with no leaves in-between I would very much like to know their name(s).
