"What if" contractor 6 months behind, then essential procurement item becomes 9 months behind? Is it unfair construction acceleration if the contractor is still pushed for overtime and accelleration even though there is a worse delay than the original - & that being a essential procurement item (like elec switch gear) that cannot be accellerated? They are late, but they are also then hurring just to wait...? Is that unfair constructive accelleration - I am guess not but I do not know. I assume the Owner goes after the GC for LD's and the GC goes after the supplier.