Why are component planned orders starting later than assembly planned orders in Supply Plan?

I'm running an Oracle Fusion Supply Plan for an assembly item with demands of 1200 MT on August 30, 2025, and another 1200 MT on September 30, 2025.

Here are the key details of the setup:

• Component Item On-hand: 100 MT
• Component Usage in Assembly: 1.1 (i.e., 1.1 MT of component per 1 MT of assembly)
• Raw Materials On-hand: 50 MT and 70 MT respectively (both buy-planned)
• Lead Times for Raw Materials: 15 days and 30 days
• Plan Start Date: July 22, 2025
• BOM and Routing Effective Date: August 1, 2025
• Resource Usage:
  • Assembly: 0.5 hrs/MT
  • Component: 0.4 hrs/MT
• Resource Capacity Constraint: Enforced
• Observed Output After Plan Run:
  • Assembly planned orders start on August 6, 2025, at a rate of