No, not as far as I know.
However, there are maps from Germany available. There are also (as you have) splitted-maps, north and south germany (and parts of austria) are also available.
I have 1 big map of Germany. However, haven't used it, since the trip to Hungary (from the Netherlands) is quite easy and I only used the Major-roads-of-Europe map.
The Germany maps are 183Mb in total. (Tele Atlas) I dont know about Navtech maps.
Version 2004.Q1.2794 - map of TeleAtlas. Compressed main graph, HLG3, MB-16, detour repaired v3, Updated POI, Signed map