Can "connection " and "relation "be interchangeable sometimes?

Can they be interchangeable?
Update: i did. i just had confusion of the definitions.
Update 2: from oxfordlearnerdictionary site

connection=>something that connects two facts, ideas, etc
relation=>the way in which two people, groups or countries behave towards each other or deal with each other
Update 3: connection=>something that connects two facts, ideas, etc

relation=>the way in which two or more things are connected
Update 4: from oxford learner dictionary.
the update 3, i just wonder if the definitions are the same in connection and relation..
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