Not one, but two brick walls are now piles of rubble!!!!!
I had already found the names of my great-grandmother's parents, but couldn't find anything in Lithuania to tie them to the rest of their families, although there were lots of Brezniker (my g-g-grandfather's LNAB) and Grek (my g-g-grandmother's LNAB) families in the town they came from. From my adding all the Breznikers and Greks I discovered to WikiTree, I was found by a few of their descendants, but even working together, we couldn't put the relationships in place.
Between Joke van Veenendaal, who found several new records I didn't already have for family members, Andrew Millard, who found an immigration record at ancestry, and Kerry Larson, who got the ancestry public link to the record that shows one family immigrating first to South Africa, then came to the US as British citizens, everything fell into place to allow me to make the final breakthrough to connect my Lithuanian gg-grandparents to their Lithuanian relatives.
With this discovery, I also reached two brand new milestones - I have my first pre-1800 relative who is my first ggg-grandparent! My only regret now is that, having been 21 this long, I can no longer do the back-flips I feel so motivated to do!!!
I also greatly appreciate the RAWKing done by Marta Johnson, who found out more about my maternal line and Elaine Martzen, who extended my ex-husband's branch.
I don't know if I'll be able to walk in the shoes of these talented genealogists, but I'm now determined to sign up as a RAWKER for the next event to try to pay it back a little bit.
EDITED TO ADD:
Disclosure - to be fully honest, I never could do a back-flip, not even the first time I was 21.