Communication device, communication method, and computer readable medium

(canceled)

6-8. (canceled)

(canceled)

A communication device comprising:

• a determination unit configured to determine occurrence of a change in a communication state of a communication performed between each of a first terminal and a second terminal that communicate with a device connected to a network, and the device;
• and
• a derivation unit configured to, when occurrence of the change of the second terminal in synchronization with the change of the first terminal is determined, derive a first change time at which the change occurs in the first terminal and a second change time at which the change occurs in the second terminal.

(canceled)

(canceled)

(canceled)

23-29. (canceled)

32-33. (canceled)

(canceled)

A communication method comprising:

• determining occurrence of a change in a communication state of a communication performed between each of a first terminal and a second terminal that communicate with a device connected to a network, and the device;
• and,
• when occurrence of the change of the second terminal in synchronization with the change of the first terminal is determined, deriving a second change time at which the change occurs in the second terminal, based on a first change time at which the change occurs in the first terminal.

(canceled)