The phrase "after questioning whether" is correct and usable in written English.
You can use it when discussing a situation where someone is uncertain or doubtful about something and is seeking clarification or answers.
Example: "After questioning whether the project would meet the deadline, the team decided to allocate more resources."
Alternatives: "after doubting if" or "after inquiring whether".
But President Thabo Mbeki, who has been in purdah on the topic for several years after questioning whether HIV really did cause AIDS, seems happy to keep her.
The Taj opened last month to good crowds, as well as a furor over a securities analyst who had lost his job after questioning whether the casino could cover its expenses next winter.
The FSA has announced a review into its own response to the affair after questioning whether it should have been "more alert" to the risks of contamination of meat amid criticism of its failure to identity the problem after the scandal was exposed in January by its Irish counterpart, the Food Safety Authority of Ireland (FSAI).
Chancellor George Osborne is at the centre of a political row after questioning whether the state should "subsidise" the lifestyles of people such as Mick Philpott.
After questioning whether the FAW would "grow with [the] team," he added "My mentor Guus Hiddink has taught me to constantly check whether people do all they can for the team or for themselves and their ego".
After questioning whether eHarmony was drawing from a biased sample of people unlikely to divorce, especially since the service famously rejects people who aren't compatible with their existing members, the eHarmony researcher argued that they do, indeed, have a representative sample of the U.S.. Additionally, the study controlled for important demographic characteristics.
Trading in AremisSoft, a software company, was halted Thursday after articles questioning whether AremisSoft had misled investors about the value of its contract to modernize the health care information system of Bulgaria.
But the north tower, meanwhile, which stood for 102 minutes, had 2.5 inches of fireproofing on the same floors because the Port Authority had in 1995 decided to gradually upgrade the fireproofing after apparently questioning whether the original thickness was sufficient.
The observation records, which were for understanding the characteristics of questioning during class, included data, such as the date of observation, class name, faculty name, total class time, whether to use questioning, question type, intended answerer, whether to wait after questioning, wait time, whether students answered or not, and the faculty members' response to the students' silence.
But once established, the king found he had to move almost immediately against the Ikhwan -- or brothers, as the tribal foot soldiers were known -- after they started questioning whether he really was upholding the religion.
Entertainment Weekly Dan Snierson commented that although there was satisfaction in the episode ending on the kiss, it may have been "more intriguing" to conclude with Will finding Emma's office empty, or "before she smiled approvingly after their kiss", questioning whether it was too soon for the two of them to begin a relationship, or "about freakin' time".
