Does “union with Christ” reorder the ordo salutis?

Institutes of the Christian Religion (I.1) frames the whole of salvation as our being engrafted into Christ — every benefit flows from union, not from a sequence of discrete steps.

If that's right, does the familiar ordo salutis (calling → regeneration → faith → justification → sanctification → glorification) describe a real temporal order, or just the logical facets of one union? And does it matter pastorally?