IndiGo and Qatar Airways will make a strategic business announcement on Nov. 7, the two companies said Tuesday, sending shares of the budget carrier higher by as much as 4%. Qatar has in the past shown interest in investing in IndiGo but the Indian airline has resisted. “We are very interested in IndiGo ... We are talking to IndiGo of doing codeshare, joint flights but not yet an equity stake in the airline,” Qatar Airways CEO Akbar Al Baker said in August. Baker said they had talked to IndiGo but the airline was “not yet ready to take a foreign investor”. When it is ready, Qatar will be interested, he had said at the time. It was not immediately clear if the announcement is about a codeshare agreement, stake sale or any other kind of partnership. Any deal, however, would come at a time when IndiGo’s two co-founders, Rakesh Gangwal and Rahul Bhatia, have been embroiled in a dispute about corporate governance of the airline, sparking concerns among investors it could have an impact on the airline’s valuation and strategy.<br/>