BLE without codec

[Kashyap23]

Hi,I am using NRF54L15 DK in which I need to transmit audio data over BLE where that data will be used for only plotting in application,I am using sampling rate of 16000 and 2 channels each of 16 bit i.e at 64 KBps .I am able to send data over BLE but only in one meter range ,if I increase the distance I could able to see loss in BLE  as I kept sequence number to check the loss.How can I solve this issue ,I didn't used any codec as BLE support at 2 Mbps which will be good enough as per my data ,what will be effecting BLE  if I maintain some more distance.

[Kashyap23]

Will the retransmissions happen automatically using bt_gatt_notify() function or do we need to do it .can you suggest any example?In my case I am using DMA in I2S peripheral for reading data and I am updating data in BLE using memcpy but thing is I am not getting any error code every time I got 0 implies success but data is missing .Will DMA for mic effects with the BLE thread in BLE?