The graph would be even more complex if you trace all the part acquisitions and divestitures in and out of Avago (LSI, PLX, Infineon, Axxia, SSD tech to Seagate, Emulex).

Then again, Broadcom liked to buy things, for example ServerWorks, Renesas, Netlogic (which in turn had acquired RMI, etc).

Big fish, little fish, ad infinitum.