Phases order in "Catan: Cities & Knights"
Yes, you can take the same kind of action at multiple points in your turn. The relevant rule is:

You may do any or all of the following in any order:
– Trade resources and/or commodities with the bank and/or other players.
– Build roads, settlements, cities, knights, city walls, and/ or city improvements.
– Activate, promote, and/or perform actions with your knights.
– Play any number of progress cards.

This could be read to mean that each of those four bullet points are &quot;phases&quot; that can happen only once each in an order of your choice, but we can infer that the intended meaning is the more permissive one by this later rule:

Trading and Building
In Cities &amp; Knights, you are allowed to build and trade any number of times and in any order. You do not need to finish all of your trading before you begin your building.