I've done bike-camp-hike. I carried carried small panniers and my UL backpack turned inside-out and stuffed with some items. The backpack was strapped to the top of my rack. I cached my bike in the woods with the panniers and bike-related gear on it and took off backpacking. Another time instead of caching the in woods, I left the bike/panniers at ranger station.

Personally I enjoyed the experience but it was neither optimal bike-touring nor backpacking. That was several years ago and I didn't go beyond that couple-of-weekend-nights-experience/experiment.