I hold a multi-entry Schengen visa. Would the airline let me board a Schengen-bound flight if my return flight is on a different airline?

Ok, worried by this question, my situation is:

Have valid multiple entry Schengen visa, first trip already made to issuing country.
DOH-ORY one way ticket with Pegasus, with 3 hour stay at SAW, so entry into Schengen at Paris. Stay for 5 days.
CDG-IST direct one way ticket with Atlas Global, Have Turkish tourist visa. Stay for 5 days. So, Exit from Schengen at Paris again.
SAW-DOH direct one way with again Pegasus airlines.
Nationality Indian, Residency Qatar, Schengen Visa by embassy in Qatar.

Can/will check-in desk agent at Doha object for my boarding detailed in point 2 (& Atlas G agent at CDG for Turkey in point 3)? I have all required hotel bookings for Paris and Istanbul. Any Timatic or other official quotations will be appreciated.

Can we enter Schengen (and/or Turkey) by two one-way tickets on different airlines?

On mobile, so T.SE did not offer me similar questions, but will search around

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I hold a multi-entry Schengen visa. Would the airline let me board a Schengen-bound flight if my return flight is on a different airline? - Man in airport waiting for boarding on plane

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I hold a multi-entry Schengen visa. Would the airline let me board a Schengen-bound flight if my return flight is on a different airline? - Inside of empty aircraft before departure

Can I travel to other Schengen countries with multiple entry visa?

Schengen visas allow to make one-entry, two-entries or multi-entries. With one-entry visa you can travel the Schengen area only once. It is indicated in your visa as \u201c01\u201d. With two-entries or multi-entries you can respectively travel to the Schengen area twice or several times during the visa validity period.

How does multiple entry Schengen visa work?

A multiple-entry Schengen visa permits its holder to go in and out of the Schengen Area as many times as he or she wants, as soon as they do not violate the 90/180 rule. Which means they do not remain in the Schengen zone longer than 90 days, within 180 days.

Should my first trip be to the country which issued my Schengen visa?

There is no general requirement that you must enter the Schengen Area through the country that issued your visa. Your main destination may be different than your first destination. To prevent complications, stick to your itinerary as best you can.

Do I need a transit visa if I have two layovers in Europe?

1. Re: Do I need a transit visa if I have two layovers in Europe? "Will I need a transit visa?" No, you will need a regular Schengen Visa (Type C).

France Denied/refused/deport to give entry on valid Schengen visa

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