Don't know, I've always have left my broody hens alone.
Day 20: I have easter eggers and Ameracaunas(lots of internal pips and 1 external!)
Day 19: 4 Gamefowl eggs looking fantastic, 1 iffy but I left it in just in case.
Day 18: 4 Crested Creme Legbars and 6 Bielefelder eggs.
I waited until now for lockdown as I have a staggered hatch and wanted to wait till the Legbars and Bielefelders hit day 18.
Day 10: 3 Modern Game Bantams that have just been moved under a broody! I moved them with a broody to prevent them from going into "lockdown" along with the rest. I hope it won't be a problem when they hatch in half the normal incubation time!
Congratulations! I hope you get more soon.