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From the graphic it looks like both are still applying to Jupiter, in which case Jupiter is collecting their light. But if Mars is already separating from Jupiter as you say, then Jupiter is not collecting the light - but it is still interposing its aspect between the two of them, and since this is Jupiter, in a good house and a good aspect, it can still signify someone or something who interferes in a helpful way. (I'm not looking at too many details, to keep the principle simple).