Is SLEX connected to Star Tollway?

Could you please clarify if there is any direct connection or affiliation between SLEX, the South Luzon Expressway, and Star Tollway? Are they part of the same network or owned by the same entity? Alternatively, is there any form of collaboration or partnership that exists between the two tollways? Understanding the relationship between them could be crucial for travelers looking to navigate the highways efficiently and for investors interested in the tollway industry.