From Longman Dictionary of Contemporary Englishwheels within wheelswheels within wheelsspokenCOMPLICATED used to say that a situation is complicated and difficult to understand because it involves processes and decisions that you know nothing about → wheel
Examples from the Corpus
wheels within wheels• For there existed wheels within wheels within wheels.• The wheels within wheels began to turn, and efforts were made to have the sentence reduced.• Whether it flows as sand or turns on wheels within wheels, time escapes irretrievably, while we watch. 