Two generations of regional bi level EMUs in Lille Flandres, 11 02 2003
Left is Z92058, on a Lille Lens service, right Z23552 coupled to another one z23500 unit. Both classes of stock can technically be coupled together, but I've never seen that.
Both were ordered by Region Nord - Pas de Calais for regional services.

Photo by Bastien Nonque - bastien59n@yahoo.fr