Traveling thru Frankfurt with expired H1b and approved 797

Have urgent travel PHL - FRA - DEL . Have an expired US H1B visa with approved 797 - will i need transit visa for Frankfurt ? has anyone made a similar trip via Frankfurt ? what was your experience

Call your airlines and ask them.

Lufthansa refuses to provide any info about transit visa, instead redirecting to german consulate website / phone.

If you or anyone on this forum has connected via frankfurt, kindly share your exp