> But in this case, it is a non profit donating to another non profit institution. So there are no real tax implications anyway.
There are implications. A private foundation has required distributions[0] and this could impact that. My guess is the IRS would be reasonable if this donation was returned, but there could be issues, especially if the foundation had delayed past distributions in order to fund this major project.
But in this case, it is a non profit donating to another non profit institution. So there are no real tax implications anyway.