Yes, there is a maximum timeout for xmlhttprequest in chrome, and that is 1 minute. Unfortunately you can not increase the timeout by setting the timeout property of xmlhttprequest in chrome. But if you are on windows, you might possibly set the maixmum tmeout with the help of regedit, and the steps are ...

• press window + r > type regedit > press enter
• navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\InternetSettings
• create a DWORD vale named KeepAliveTimeout and set the data value 120000 (2 min.)
• create another value named ServerInfoTimeout, following the same steps
• restart PC

No, the XMLHttpRequest object does not have a maximum timeout value, because the default timeout value is 0, meaning infinite.

Source: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/timeout

You mentioned Chrome: the network stack you are on does have timeout limitations.

Google Chrome will not let you change the default timeout values.