They were probably thinking of the max size for packets in TCP, which is 64K (65535 bytes). However, Ethernet has a MTU (Maximum Transmission Unit) of 1500 byt

They were probably thinking of the max size for packets in TCP, which is 64K (65535 bytes). However, Ethernet has a MTU (Maximum Transmission Unit) of 1500 bytes. Unless jumbo frames are used. And so I agree with you, the number of packets that will be sent for 69 KiB vs 92 KiB will likely be different.