Where can I get the details of my competitor's TIME LAG conversions?

Hi guys,

Good day, I work on an ECOM customer website, activate ecom tracking and collect the details of the conversion. My client wants to know the conversion waiting time of our competitor.

For example, here is the sample screenshot of the analytics, there is some possibility of knowing the delay time of our competitor (not Google, nor the conversion values ​​or the numbers, we just need to have an idea about the framework of conversion time). Any other tool or source to harvest the data.
SEMrush

Please, advice, that would be a great help to the people.

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