I don't know much about your company, but I'm basically sure that the three days mentioned by this company should mean working days, but Saturday and Sunday should also be counted, because as a real estate company that serves as Party B's consulting service, six days is usually endless.
Personally, I think it is more likely that the landlord will be pass, but it will be safer on Tuesday.
By the way, the so-called management training of such companies should not be real management training. Generally, the management training of large companies is to train managers for the company, and the salary and training methods will be different from those of ordinary employees, while the management training of small companies is basically to improve the attractiveness of their school recruitment in disguise. Small companies have no competitive advantage in the recruitment market under the guise of management training.
Keep a good attitude, it is not necessarily a bad thing to miss it.
I wish the landlord satisfaction with his work and hope to adopt it.