What am I doing wrong with my routes?

[khush37]

What is intended is that the plane will fly: 
ATL-DEL-ATL-BOM-ATL
But because of the 24 hour limit I have separated the route into:
ATL-DEL-ATL (6b93e4513422def7c254ab22448fa824)
ATL-BOM-ATL (c6c0135293b7dabb27d1e18f31fc474c)

Both routes are activated but only ATL-DEL-ATL is flying. 
What do I have to change to make ATL-BOM-ATL fly as well?

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Same problem happening with:
ATL-CCU-ATL-HYD-ATL

ATL-CCU-ATL (3eebb0b70e293ae0dc5bd41cf2a4cea7)
ATL-HYD-ATL (5291a31a531b8e8edaafec9fb5be209b)

Only ATL-CCU-ATL is flying.

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Also:
PEK-HYD-PEK-PNQ-PEK-AMD-PEK

PEK-HYD-PEK-PNQ-PEK (5b7eb1887988702444d246ff4457af7d)
PEK-AMD-PEK(d0f2e522038172aea014f45148e55f1e)

Only PEK-HYD-PEK-PNQ-PEK is flying.