Another idea,
https://www.amazon.com/NQN-Quick-Connect-Extension-Compatible-Blackstone/dp/B092SD4SY7/ref=sr_1_1_sspa?crid=39DLUCV0O9I7O&keywords=propane+quick+connect+hose+rv+to+gas+grill+adapter&qid=1637440192&sprefix=adapter+for+RV+quick%2Caps%2C224&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFOUU9PUlg3VFFFWVcmZW5jcnlwdGVkSWQ9QTAxODU3NjFVQTZNMklIS0c3TzQmZW5jcnlwdGVkQWRJZD1BMDc1MTA0NjFUN0xQUUVZWTJFWUQmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl