The member collections contain the same information in three slightly different forms:
The LinkedJobs collection contains a list of all of the jobs found in the chain, without information about their links.
The Links collection contains information about all of the links found.
The JobLinkInfo collection contains a JobLinkInfo item for each job in LinkedJobs; each item contains a reference to the job plus all links from the Links collection that involve the job, grouped based on whether the job is on the referencing or referenced end of the link.