I’ve found references to all kinds of interesting stuff on Edgar Reitz, interviews and programmes that he did in English, which I cannot access.
Please Google algorithm, bid me the three wishes implied in my endless and fruitless searching.
For example
Heimat: the Story of a Nation, a documentary presented on BBC 4 in 2005.
There’s also evidence of Mark Lawson speaking to Edgar Reitz for Front Row,
But neither of these things are available online, there’s very little mention of them out in the Googlesphere – but someone, somewhere must have a copy of them.