I thought the origin of dialectic was dialog, speech and counter speech. Somebody says A, somebody else Non-A, like in Dialogs of Platon.
But Hegels Dialektic is a Negation of formal Logic. It is integrating contratiction, "pure negativity", it is a"speculative Logic". Thats why, in my opinion, you have to understand first this speculative Logic. Just in case you want to avoid the danger of trivialisation.
Your article is a good starting point for discussion!