Uhm, LDAC/AptX LL seems to support lossless over BT. Perhaps it is apple here who is really behind the technical curve. But the point is can one even hear the difference that is the most important question of all.
LDAC only supports lossless in very specific scenarios and it cannot combine the use of additional bit depth and higher sampling rate and lossless transmission.
You can get 16-bit, 44.1kHz lossless in ideal conditions.
en.wikipedia.org
When the codec is set to 16 bits/44.1kHz at 909 kbps (or 16 bits/48kHz at 990 kbps) LDAC can stream lossless audio that is identical in quality to (or slightly higher than) Audio CD or standard resolution uncompressed audio.
303/606/909 kbps at 88.2/44.1 kHz with depth of 32, 24 or 16 bits. So it will vary between 303-909 kbps depending on the connection. You will only be able to get lossless transmission using the higher bitrate which will only be achieved in ideal scenarios close to the device.
Soundguys did a test of LDAC:
Sony’s LDAC has risen to popularity as the audiophile-grade Bluetooth codec. Can LDAC match the quality of wired 24-bit/96kHz Hi-Res audio?
www.soundguys.com
Actually using LDAC’s highest quality settings can be tough depending on your setup and listening environment. Most smartphones I tested default to 660kbps or lower in good conditions, but that’s not a guarantee. The only way for consumers to change this is to dive into Android’s Developer Settings, hidden away in the operating system’s menus. Furthermore, the codec pushes Bluetooth’s data speeds to such limits that reliable connections for “Hi-Res” are far from guaranteed. Even 660kbps will struggle in less than ideal environments.
Ultimately, LDAC users are likely to spend a fair bit of time listening to the 330kbps version. Unfortunately, the available resolution and 18kHz cut-off frequency are objectively inferior to CD quality, Qualcomm’s aptX, and SBC.
They actually concluded that it was inferior to aptX and even SBC in real-world use.
aptX LL does not support lossless. LL is their low-latency codec. Focusing on lowering latency so it's usable when combined with video. It only provides 352 kbps.
aptX HD is the high-quality one but does not support lossless either:
This involves the dynamic application of "near lossless" coding for those sections of audio where completely lossless coding is impossible due to bandwidth constraints. "Near lossless" coding maintains a high-definition audio quality, retaining audio frequencies up to 20 kHz and a dynamic range of at least 120 dB.