Sustainable lead time is not explicitly mentioned however, the company is taking initiative towards understanding its impact, hence marked no.

pg. 37

"We continue to address the role that our buying practices have on overtime hours, including through Better Buying, an initiative to understand the impact of our business planning, as well as other aspects of the design and development process. After we received our results, we shared our findings with our sourcing teams, enabling them to examine how their planning affects lead times and our visibility into our supplier’s capacity to fulfill orders. Gap Inc. Sourcing teams are working to develop systems that can more appropriately place orders depending on our suppliers’ capabilities to fulfill them; these learnings are helping us to implement improvements while we continue to solicit supplier feedback."