Unfortunately, I didn't get a chance for a pic, but this week I saw a "slide within a slide" on a 5ver.
It was up front in the bedroom, street side. The main slide was about 6 ft wide and the slide in the slide was about 4 ft wide.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10