As a matter of courtesy.

[Rollercoaster1]

What does it mean when someone visits or meets you as a matter of courtesy?

 

[Rover_KE]

You could have tried clicking here.

Ask again if you have any specific questions.

 

[Rollercoaster1]

You could have tried clicking here.

Ask again if you have any specific questions.

I couldn't understand much from the link you shared. Here is an example 'He visited us as a matter of courtesy'.

 

[tzfujimino]

https://www.merriam-webster.com/dictionary/a matter of

https://www.oxfordlearnersdictionaries.com/definition/english/courtesy_1?q=courtesy

I hope those links will be of some help to you.