I will be flying IAD-BOG-CTG. The IAD-BOG arrives at 9:01pm and the BOG-CTG flight departs at 10pm.

Delta, who issued my ticket on Avianca, says this is a legal connection as does AV.

How does it work?

Do I have to clear customs in BOG since it is my first point of entry into Colombia?

I will have just carry-on luggage and am in business class.

Do you have to take a shuttle bus to the connecting terminal, or can you walk?

Any suggestions?

On the return, I land in BOG at 7:20am and leave at 9:21am. I assume domestic to international with 1 hour 59 minutes is sufficient?