It is not a correct expression.
The Eucharist under the species of bread is the substance of the Body of Christ ONLY. It is not his Blood, Soul, or Divinity.
Under the appearance of wine is the substance of the Blood of Christ ONLY. It is not his Body, Soul, or Divinity.
Remember, “substance” here is not the chemical term, but the philosphical term: the “what-ness” or “is-ness” of a thing.
Therefore, there is no question about secondary or tertiary substances. Under each consecrated species there is only ONE substance, that of the Body or that of the Blood. But because where his Body is, there must necessarily be his Blood, Soul and Divinity, these other three are truly PRESENT, but by concomitance. Similarly, in the Chalice, where is Blood is, there must necessarily be the Body, Soul and Divinity, and these three are PRESENT too, by concomitance. This is necessary because the living Christ cannot be separated and this is how Christ is whole and complete under either species of the Eucharist.
Now it is correct to say that the Body, Blood, Sou