Ok so something rather peculiar happened when I was assisting a fellow nester with two 95 construction effigies.
1. The first effigy he did registered as 10k con exp, even though it was a 95 one. (According to the assist interface. I didn't have xp counter up to verify.)
2. Second one registered as 25k con exp. (Turned on xp counter for this one afterwards and verified 25k exp.)
3. Exp in total registered as 25k. I did not become maxed out for today and can still assist an additional 5k exp.
Wat is this I dont even