The link (LONGLINK2) is present in the 2T#ORFWD=BTMJ chain record, but it is empty. This is a normal situation for a chain record. A link may be empty even if the REF_COUNT indicates that it must be taken into account. This link may represent a placeholder or an intentional gap in a display, for example.
Your application must be ready to deal with this situation.
I recommend you the reading of this article about Chains and Chain Record. You may find there interesting information and tools for your application.