Managerial remuneration

You cannot pay remuneration from two companies. this is not lawful 

Friends,

Mr.A is a managing director of a company and in other private limited company, Mr.A is not a director but getting salary under some designation. 

Should that salary be included 

From the query I understood that these two companies are independent companies. So what is the purpose of adding remuneration from both companies together?For computing ceiling under section 197,no need to add remuneration from multiple companies.