Yes, both girls were strapped in whilst i tandem fed on the plane. Admittedly it felt like my boobs were being stretched!! But yes, it was possible. i just put a pillow under DD1 head (who was sitting on DH lap) and she fed pretty easily. There really was no other choice as she's too young to suck a sweet. I tried getting her to drink some water (as the swallowing helps with relieving the ear pressure) but she wouldn't at all. The crew didn't look too surprised and were helpful in bringing extra pillows and blankets.