Discover Financial Service’s third-quarter earnings results offered evidence that an acquisition by Capital One is on track.As for the state of the consumer, caution abounds, and many households are looking for ways to consolidate debt.Interim CEO Michael Shepherd said on an earnings call that “Capital One continues to lead merger-related activities … with applications currently under regulatory review. Integration planning is advancing well.”Payments volumes were down 4%, reflecting a slowdown in Discover ...