What is the impact of Slave latencyin BLE?

[Subhanshu Sahu]

I want to transfer data from slave to master and back to slave from master and I am doing this in the following cases:

1) Case1: Fixed connection interval and slave latency =0

1) Case 2: Same fixed connection interval and slave latency =5

The communication latency is larger in the second case. Why this is happening?

I know slave latency is the number of connection events a slave can skip to remain idle but how it is impacting communication latency.

[Kenneth]

If the slave don't have any data to send, it will skip connection intervals if slave latency is >0. This will not affect latency from peripheral to central, because the peripheral can send data every connection interval even if slave latency is >0. However it will affect latency from central to peripheral as the peripheral will skip connection intervals equal slave latency.

[Subhanshu Sahu]

Thanks @Kenneth for enlightening.