Some airlines allow only 1 item as your baggage allowance. If you are travelling with two or my items of checked luggage, and their combined weight is still below the weight limit, do airlines generally allow you to kind of bundle them together with a length of rope or similar and count it as 1 item?
In my case I have some flights booked on Lufthansa and Singapore airlines, and I'm travelling with my guitar case and my backpack. I'm well under the weight limit, but I fear I will be charged a hefty fee for the extra item and there is not any option to pre-purchase additional luggage on my fare. I want to know if I should bother attempting to tie my backpack to my guitar case and call it 1 item, has anyone had experience either success or failure with this?