This is not an official answer. I live in Silver Spring and I’ve had to go to the airport a few times since the shut down. Before the shut down, I would transfer from the red to the yellow line. Now that I have to transfer onto the blue line instead it’s been my experience that it takes 5 to 10 more minutes. I just don’t know what the actual trip time is.

Edit: so calculate the trip time from your start and end point using the blue line, and then subtract a few minutes. Not sure why I’m being downvoted for a much more helpful answer than had been given prior to my comment…

They can’t do this right now because the yellow line isn’t in service. They’re asking for other people’s experiences before the shut down both before and after COVID.

No, I had a new phone and the battery still drained when I used it. It’s a lot to ask of your phone while you’re literally not “using” it.

I always carry a fully charged battery pack with me just for this reason.