In case you haven’t gotten an answer to your question yet, OP, the short answer is its a mix of both.
Your body stores fat predominately in 2 ways. The first is in adipose tissue, or, specific cells designed to store fat. The second is fat circulating through your system, bound to fat transport proteins. Fat that is deposited in adipose is the most difficult to burn, however, fat molecules are constantly being cycled from the blood to these stores so its difficult to track which fat molecules were ingested first. The fat you most recently consumed will end up in the blood sooner than adipose storage, so the simplest answer is yes, but again due to all the processing and interchange of fat molecules, it’s not super cut and dry.
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