Да.

During periods of high login traffic, Battle.net may put you in a login queue. These queues help our servers process login attempts more effectively than if players are repeatedly clicking or spamming the login button and hoping to get lucky.

The login queue will not save your place if you leave or if you are removed because you did not enter your information correctly. To avoid sitting through the queue more than once, be sure to:

Stay in the queue until it finishes. Do not leave or restart the client.
Enter your Battle.net account name and password correctly.
Enter your authenticator code promptly and correctly.
Accept any Terms of Use or License agreements promptly.