Complex sentence: This is found alongside the'Love to shop' inflight retail magazine of which it's contents includes the range of tax-free and duty-free shopping available to purchase onboard as well as the buy-onboard food and drink menu.
Split into simpler sentences: This is found alongside the'Love to shop' inflight retail magazine. It's contents includes both the range of onboard tax-free and duty-free shopping as well as the buy-onboard food and drink menu.