Just because they didn't get along well doesn't mean that Gen Flynn wouldn't sit down with AJ. In fact Gen Flynn probably wasn't doing it for AJ. AJ has a massive audience that Gen Flynn, as a protector of the US and her citizens, would feel obliged to reach out to with a conversation. The interview was available to the public, so any signs of hostility would have had to be kept to a minimum (it surprised me at how polite AJ seemed to have been during that interview).
Just because they didn't get along well doesn't mean that Gen Flynn wouldn't sit down with AJ. In fact Gen Flynn probably wasn't doing it for AJ. AJ has a massive audience that Gen Flynn, as a protector of the US and her citizens, would feel obliged to reach out to with a conversation. The interview was available to the public, so any signs of hostility would have had to be kept to a minimum (it surprised me at how polite AJ seemed to have been during that interview).