L1: several improvements in triplet linkage

L1: several improvements in triplet linkage

requested review from @v.akishina

assigned to @se.gorbunov

Dear @se.gorbunov, @v.akishina,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

added CodeOwners label

merged