According to
this link, after Piltdown man was "discovered", "For the next 40 years, Piltdown Man remained a key member of the human family tree". This demonstrates how readily ToE faithful accept any crumb they can find.
Kate Bartlett is not a scientist but a TV producer with a vested interest in hyping her programmes with the kind of assertion you quote. For all but a few chauvinistic Brits, Piltdown man was never more than a side issue in the field of hominid palaeontology.
As to Tiktaalik, I thought I had responded that controversy surrounds this so-called link.
Here is one source but there are many others. Again, you can Google as well as I can.
I assure you I googled most assiduously, and the sites that came up claiming to debunk
Tiktaalik were pitiful: that's why I asked you for one you thought convincing.
Your link is no better than the others, I'm afraid: it admits that
Tiktaalik shows tetrapod features, then goes on to dismiss them on utterly spurious grounds: the mobile neck because it is shared by species not thought to be tetrapod ancestors (so what?), the pectoral fins because they aren't exactly like
Acanthostega's (does the author know what 'transitional' means?), and the whole thing because
this is not an animal that falls plumb in the middle between Panderichthys and Acanthostega
- as though nothing could be transitional if it didn't fall "plumb in the middle".
Once again, we see the sorry spectacle of creationists flailing away with desperate obfuscation in a vain attempt to maintain the fiction that there are no transitional fossils.