Seventeen thought moments explains the Dependent Origination

In a closer analysis of these two, I felt both these concepts address the same.

Yes, it is. Whole of abhidhamma is describing the insight meditation's object. But the object of insight meditation is every conditional arising stuffs. So, abhidhamma must describe everything in paṭiccasamuppāda.

ie: Seventeen thought moments explains the Dependent Origination.

Avijjā and kamma in the past, create the present paṭisandhi/bhavaṅga/cuti-mind(viññāna/manāyatana)-paṭiccasamuppāda, it's mind factors-paṭiccasamuppāda (nāma-paṭiccasamuppāda), and it's depending on matters (rūpa-paṭiccasamuppāda).

Then that bhavaṅga-mind-paṭiccasamuppāda's vanishing+contact-paṭiccasamuppāda of outside matter/inside mind āyatana-paṭiccasamuppāda create pañcadvārāvajjana-mind-paṭiccasamuppāda.

Then that pañcadvārāvajjana-mind-paṭiccasamuppāda +contact-paṭiccasamuppāda of outside matter/inside eye/etc āyatana-paṭiccasamuppāda create inside eye-mind/etc āyatana-paṭiccasamuppāda.

Then that inside eye-mind/etc āyatana-paṭiccasamuppāda. +contact-paṭiccasamuppāda of outside matter/inside mind āyatana-paṭiccasamuppāda create inside santīraṇa mind āyatana-paṭiccasamuppāda.

Etc.

This is just the example. There is many detail which I can explain in a few day.