Can you force Google to index backlinks, or only invite the crawler in? This deck breaks down the mechanics: why Googlebot ignores a large share of tier-2 URLs in mass batches, the three bottlenecks that keep donor pages undiscovered — orphan pages, crawl budget, weak internal pathways — and which interventions actually move a link from built to crawled to indexed, with the honest limit that the final call always stays with the search algorithm.
Learn more:
https://en.speedyindex.com/
https://en.speedyindex.com/fix-crawled-currently-not-indexed/
https://en.speedyindex.com/how-to-check-backlink-indexation/