Ok I stand corrected. The source I watched did not attribute it to that original tweet and you could've linked the video to begin with.

Seems to check out, but still need to line up of Biden's motorcade to its entrance into the D.C. Couldn't find sources with proper timestamps or clocks displayed including C-Span which I will be using as a primary source.

1. C-Span coverage has Biden at the Blair House around 1:50:00 mark (https://youtu.be/ZwvbQR887W0)

2. Biden leaves Blair House to attend mass at the Cathedral of St. Matthew's

3. Timestamp of tweet by same journalist confirming attendance with pic at cathedral @ 7:09 AM EST

4. Blair House, 1651 Pennsylvania Avenue NW, Washington, DC 20503 to Cathedral of St. Matthew the Apostle, 1725 Rhode Island Ave NW, Washington, DC 20036 turns out to be <1 mi (~0.7 mi) taking at most 7 min in heavy traffic (according to Google)

5. Twitter pic of Biden at mass (https://twitter.com/InesdLC/status/1351894576609583104) posted @ 7:09 AM EST; roughly lines up with C-Span coverage @ [timestamp: 2:00:45]

6. Extrapolated timeline: Biden leaves Blair House @ ~6:45-7:00 AM EST [timestamp: 1:50:00] arrives at cathedral @ ~6:47-7:02 AM [timestamp: 1:52:30]

7. Biden's motorcade arrives at Capitol building [timestamp: 3:25:30]; approx. @ 8:34 AM EST

8. Motorcade passes by NG around this timeframe for it to make sense: [timestamp: 3:22:00 - 3:24:00]

9. Twitter clip of Biden's motorcade posted 8:32 AM EST; accounting for recording time & upload time delays, it seems to check out