My latest: 5BD7-0000-0039-DEE8
I had this level built out almost completely before I realized that I could use a pipe to get a second screen. So, rather than abort my entire level here and redo it, I just left it as it is. You play across the top half, then door down to the second half.
I don't believe I left any way to get to the second level without going across the first one entirely. Let me know if you find one though so I can fix it!