the Hound learned that Lord Beric was off to behead his brother
“The Hound?” Ned asked, frowning. Of all the Lannister party, Sandor Clegane was the one who concerned him the most, now that Ser Jaime had fled the city to join his father.
“Oh, returned with Joffrey, and went straight to the queen.” Littlefinger smiled. “I _would have given_ a hundred silver stags to have been a roach in the rushes _when he learned that Lord Beric was off to behead his brother_.”
"The Hound" refers to Sandor Clegane
Hi, do the underlined parts tell us Littlefinger was with the Hound when the Hound learned that Lord Beric was off to behead his brother? And does the event "the Hound learned that Lord Beric was off to behead his brother" happen in the past or in the future?
Thank you.