How much they cumulatively affect score is, at least to me, a big unknown. Yes, both become major derogs in your CR, so their dual inclusion certainly is not helpful upon a manual review.
However, the answer depends upon the degree to which FICO may separately score each derog, and add up the damage, or the degree to which damage is assessed only or primarily on the highest level of derog reported. I dont know of a solid answer to that question.
Take two consumers, both with the identical derog history on an account. Consumer one has had every level of derog reported, from a 30/60/90/120/and CO prior to the reporting of a collection. Consumer two only has the reported collection. Both have the same history. No charge-off or collection ever occurs without prior delinquencies, reported or not. How much more is consumer 1 penalized than consumer 2?
