JP:I doubt very much that you will be able to make the connection from the eastbound Chief to the Capitol, SAME DAY.
Amtrak changed to departure time of the Capitol east-bound from Chicago and made it about two hours earlier. I was told this was to make it easier for Capitol passengers to connect with southbound Silver Service trains in DC. BUT, this has totally "messed-up" connections to the east-bound Capitol from all the western trains.
Now I am certain there ARE days when the Chief , Zephyr and Builder arrive into Chicago in time for east-bound Capitol passengers to make the connection. But GENERALLY this does not happen because not enough "connecting-time" is available.
Bottom-line is that I , personally , would NOT expect to make a same-day connection from the Chief to Capitol EAST-bound.
This August I am taking the Chief round-trip,between LA and Chicago and returning to Pittsburgh where my trip will start. WEST-bound I CAN easily make the connection from the Capitol to Chief in Chicago. But, on my return, I will opt for the 3-Rivers east-bound because I know there is little chance I would make the connection otherwise.
There are, in my opinion, MAJOR disadvantages between the 3-Rivers and Capitol. First, the 3-Rivers does not GO to DC----but rather to Philadelphia, at which point one would have to transfer for a train south to DC. Secondly, the 3-Rivers is a single-level train with no observation-car and no full-service dining-car.
If I am correct, the Capitol used to depart Chicago EAST-bound about 7:00 PM----about two hours LATER than it does today. This made connections to it from the arriving western trains more likely. But this newer 5:00 PM departure is simply too early (in most cases) for east-bound passengers to make the connection to the Capitol. Now, it DOES happen sometimes. But, I know I certainly would NOT expect to make a same-day connection east-bound. Maybe this is just ME.
So I always "opt" for the 3-Rivers back to Pittsburgh from Chicago even though I really do not WANT to.
Another problem I have with the east-bound Capitol into Pittsburgh, anyhow (with this present schedule) is that it arrives in at 4:00 AM !!!YUCK ! The 3-Rivers arrives at a more "civilized" 9:30 AM.
So that is my "two-cents" worth.