Lets see an example: I go for a 4h bike ride and have 17h recovery as the result. Immediately I go for a 20min run. After the run, my recovery time is 15h... Does it make sense? By adding additional running to training, the recovery time should increase, not decrease.
Furthermore, I believe, that if I do a hard running workout in the evening, that results with 42h of suggested recovery time. On next morning I do a swimming workout, and It does not affect recovery time at all. In the evening I do a hard cycling workout and I get 17h recovery time. So it seems: 42 - 24 - 1(about the workout duration) - so swimming or cycling does not affect recovery time from the workout a day ago...