Why do you think that? Assuming both companies worked 4 days between M-F, that would always mean you'd have a minimum of 3 days overlap. Unless we're talking

Why do you think that? Assuming both companies worked 4 days between M-F, that would always mean you'd have a minimum of 3 days overlap. Unless we're talking about urgent support type issues, for which scheduling would probably need to be staggered at each company, anyway, I think 3 days a week is totally enough time to schedule necessary meetings and get prompt responses to email communications.