How to use max30102 with other sensors?and calculate spo2?

[UfkuAcik]

Hello;
I am planning to use this library with bme280 sensor,which has some delay functions in superloop.

But as I can see;
This library needs to check max30102 interrupt flag continually inside superloop.

How can I use both sensors together?(Without RTOS preferably)
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Also how can I calculate spo2 using this library?

Is just using someting like below is ok?

Or usage of an algorithm is needed,like below:

https://www.analog.com/en/technical-articles/guidelines-for-spo2-measurement--maxim-integrated.html