I wrote a reply to ICU on this but can't find it. I'll repeat.
https://www.grassley.senate.gov/imo/...ey_-_biden.pdf
The link above is an FBI FD-1023 report, describing interviews with a confidential informant, "CHS. " CHS appears to be a small time investment banker who specializes in oil and gas. Zlochevsky is the owner of Burisma. Ostapenko was Burisma's chief financial officer. Shokin was the prosecutor general of Ukraine, who allegedly was investigating Burisma.
See this excerpt,
"Zlocehvsky asked CHS and/or Ostapenko if they read the recent news reports about the investigations into the Bidens and Burisma, and Zlochevsky jokingly asked CHS if CHS was an "oracle" (due to CHS's prior advice that Zlochevsky should not pay the Bidens and instead hire an attorney to ligitgate the allegations concerning Shokin's investigation.) CHS mentioned Zlochevsky might have difficulty explaining suspicious wire transfers that may evidence any (illicit) payments to the Bidens. Zlochevsky responded he did not send funds directly to the "Big Guy" (which CHS understood was a reference to Joe Biden). CHS asked Zlochevsky how many companies/bank accounts Zlochevsky controls; Zlochevsky responded it would take them (investigators) 10 years to find the records (i.e. illicit payments to Joe Biden)."
This may imply that Zlochevsky used "shell companies" to hide the source of payments to the Biden family. But he doesn't directly say that. And this is coming second hand through the FBI informant.