Do BGP peers have to be directly connected?

Related questions

1. What are BGP communities?
2. How does BGP work Cisco?
3. What is multi exit discriminator for BGP?
4. What is the default weight in BGP?
5. What is BGP extended community?
6. Why we use no synchronization in BGP?
7. Why is BGP used?
8. What is update source in BGP?
9. How does RIP prevent routing loops?
10. How does OSPF prevent loops?

Tags

1. #internal
2. #addresses
3. #their
4. #external
5. #connected
6. #neighbors
7. #referred
8. #reach
9. #often
10. #another
11. #statements
12. #where
13. #neighbor
14. #directly