The major arcanum sets the tone: what is going on in terms of context of the situation and your question?

The minor arcana elaborate what the potential problem, solution, or uncertainties are with your situation and/or conflicts.

The synthesis, the result of the three cards, constitute the consequences and results of what will happen.

The minor cards are importantly because they map how things will play out in relation to the synthesis card.

All three cards are important, since they map the beginning, middle, and end of you question. Their interrelationships and connections are infinite, since the tarot is a divine grammar whose combinations relate to you the word of God (order and meaning) emerging out of chaos (tohu vay bohu).

Thank you Almustafa for help with this. Your answer has made things clearer and reminded my that I need to lessen my intellectual understanding of the spread but put more effort into meditating on the messages.

Much appreciated