The difference between direct and indirect supervisor is the presence of the supervisor. Direct supervision means a supervisor is psychically present.
When mailing a certified letter, a person should expect it to take from three to five days to reach its destination. Depending on how long it takes the recipient to pick up the letter, the process can take up to 21 days. People who send certified mail receive a notification to prove that the letter has been received by its recipient.
How long does mail take to arrive? on average 3-4 days It also depends on the distance it has to travel. Mailing a letter, using the basic postage stamp, from one town to a town only 20 miles away, can be deliv â¦ ered next day.However, one state to another? I agree with answer above, average 3-4 days.t depends what time you posted the letter and if it was first class are second, if you posted it before the mail was taken and it was first class it should arrive the next da â¦ y if it was second maby 2-3 days or more.