The links among those adventures were not there in the original versions; they came after, not before, Dragonlance was around as proof of concept. (Heck, except for T1, Temple didn't even exist yet when the Dragonlance series started.)Intentionally? I think you are right, but as has been pointed out many times Temple of Elemental Evil, or The Slave lords modules, combined with the Against the Giants, Vault of the Drow, and Queen of the Demonweb pits series certainly works well as a AP.
However, the series starting with G1 was quite intentional, and predates DL by several years. That's seven linked adventures, and though some are quite short by page count, they're each about as long as any DL module to actually play through.