I was having the same problem but after speaking to a few people i came up with my own that seems to be working at the minute. The problem is these plans are a rough guide and it all depends on current fitness what plan you take/they recommend you take.
I train 5-6 days a week, 3 days running, 2-3 days cycling, 3-4 days swimming and 3 days gym. Monday gym and swim (I always go swimming after the gym) get my body used to how i will feel after swim on race day.
Tuesday Cycle and run, depends on session I am doing but will go cycling first if its on turbo or shorter ride due to time the run will be speed/tempo.
Wednesday as Monday, Thursday as tuesday but run will be hill work instead
Friday will be as Monday but with bike as well depending on time this session maybe done on Saturday. Sunday Long run followed by recovery swim.