I don't think there are any detailed chronologies from the Twilight War to 2300AD about, at least not in the detail that can be found in T2K. You could probably piece together a partial one from looking at the various 2300AD websites l listed.
Have a look at the articles on Dan's Etranger websites in particular.
http://www.users.globalnet.co.uk/~dheb/2300/index.htm
http://www.etranger.org.uk/2300/notice.htm
They have a lot of military orbats which go into the background of various countries from the Twilight War period up to 2300AD.